Fatto matematico: 1025 is the smallest number that can be written as the sum of a square and a cube in 4 ways.
Trivia: 1025 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: October 21st is the day in 1520 that João Álvares Fagundes discovers the islands of Saint-Pierre and Miquelon, bestowing them their original name of "Islands of the 11,000 Virgins".