Fait général: 12856 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 12856 is an unremarkable number.
Culture générale: 12856 is a boring number.
Date historique: March 13th is the day in 1957 that Cuban student revolutionaries storm the presidential palace in Havana in a failed attempt on the life of President Fulgencio Batista.