85 (eighty-five) is the natural number following 84 and preceding 86.
85 is:
the product of two prime numbers (5 and 17), and is therefore a biprime; specifically, the 24th biprime not counting perfect squares. Together with 86 and 87, it forms the second cluster of three consecutive biprimes.an octahedral number.a centered triangular number.a centered square number.a decagonal number.the smallest number that can be expressed as a sum of two squares, with all squares greater than 1, in two ways, 85 = 92 + 22 = 72 + 62.the length of the hypotenuse of four pythagorean triangles.a Smith number in decimal.a palindromic number in bases 2 (10101012), 4 (11114), 7 (1517), and 16 (5516).a repdigit in bases 4 and 16.The aliquot sum of 85 is 23 within the aliquot sequence (23,1,0), 85 being the second composite number in the 23-aliquot tree.
Messier object M85 is a magnitude 10.5 lenticular galaxy in the constellation Coma BerenicesNGC 85 is a galaxy in the constellation Andromeda85 Io is a large main belt asteroid85 Pegasi is a multiple star system in constellation of Pegasus85 Ceti is a variable star in the constellation of Cetus85P/Boethin is a periodic comet85 is the Saros number of the solar eclipse series which began on −170 March 14 and ended on 1110 April 20 (1280.1 years, 72 solar eclipses)85 is also the Saros number of the lunar eclipse series which began on −103 August 2 and ended on 1249 October 23 (1370.3 years, 77 lunar eclipses)In titles and names
Federalist No. 85, by Alexander Hamilton, the last of The Federalist Papers (1788)The 85 Ways to Tie a Tie, a book by Thomas Fink and Yong Mao85 Days: The Last Campaign of Robert Kennedy a book by Jules WitcoverLive/1975–85, an album of live recordings by Bruce Springsteen (1986)80–85 a compilation album by Bad Religion (1991)Cupid & Psyche 85, an album by band Scritti Politti (1985)45/85 was a television documentary on World War IIMinuscule 85, Papyrus 85, Lectionary 85 are early Greek manuscripts of the New Testament"85", a 2000 rap single by YoungBloodz, from their album Against Da Grain85°C, a Taiwanese coffee store chain."The Curse Of 85 (W.S.T.F.D.W.I.T.W.W)" a 2015 rap song by Skrilla801In U.S. college athletics, schools that are members of NCAA Division I are limited to providing athletic scholarships to a maximum of 85 football players in a given season. The specifics vary by the two Division I football subdivisions:
In the top-level FBS, each player provided with a scholarship may, and almost always does, receive a full scholarship.In the second-level FCS, schools are allowed to provide football-related athletic aid equivalent to 63 full scholarships, but this aid may be divided among up to 85 players as the schools see fit.The year AD 85, 85 BC, or 1985.The Muslim calendar year 85 AH.The atomic number of astatineThe number of the French department VendéeThe ISBN Group Identifier for books published in BrazilThe radix of the Ascii85 (sometimes called Base85) binary-to-text encodingThe IQ and nickname of Aaron in Alien 3The number worn by Chad Ochocinco, whose name means "eight five" in SpanishArabigere 85 is a village in IndiaE85 fuel is 85% ethanol and 15% conventional gasolineMCS-85 was a family of Intel processors including the 8085TI-85 was a graphing pocket calculator by Texas InstrumentsKC 85 was a family of small computers built in East Germany in the 1980sPMD 85 was a personal computer built in Czechoslovakia in 1985Learjet 85 is an all-composite plane being developed by Bombardier AerospaceBritish Rail Class 85, a category of UK train locomotivesDRG Class 85, a category of German train locomotivesTK85 was a clone of the Sinclair ZX81 made in Brazil in 1983Lima Site 85 was a battle in the Vietnam WarA85 is the Dutch Defence in the Encyclopaedia of ChessEF 85mm is a photographic camera lens by CanonF85 (disambiguation), multiple usesPart of the assignation for the Toyota AE85, commonly referred to as an "eight-five".85mm is a common caliber for cannonsSU-85 was a Soviet tankTR-85 was a Romanian battle tankTu-85 was a prototype Soviet bomberASU-85 a Soviet self-propelled gunCZ 85 is a Czech 9mm semiautomatic pistolPT-85 is a Korean tank7.62 Tkiv 85 is a Finnish army rifleHG 85 is a Swiss fragmentation grenadeTaurus Model 85, a 9mm revolver made in Brazil