Hecho matemático: 4325 is a member of the Fibonacci-type sequence starting with 4 and 9.
Trivia: 4325 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fecha histórica: November 3rd is the day in 1333 that the River Arno flooding causing massive damage in Florence as recorded by the Florentine chronicler Giovanni Villani.