Hecho general: 7245 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 7245 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 7245 is a boring number.
Fecha histórica: November 1st is the day in 1963 that the Arecibo Observatory in Arecibo, Puerto Rico, with the largest radio telescope ever constructed, officially opens.