Fait mathématique: 2855 is the smallest number that can not be formed using the digit 1 at most 21 times, together with the symbols +, × and ^.
Culture générale: 2855 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: October 25th is the day in 2004 that Fidel Castro, Cuba's President, announces that transactions using the American Dollar will be banned.