Fait général: 1245 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 1245 is a dodecagonal pyramidal number.
Culture générale: 1245 is a boring number.
Date historique: May 29th is the day in 1790 that Rhode Island becomes the last of the original United States' colonies to ratify the Constitution and is admitted as the 13th U.S. state.