Hecho matemático: 7225 is the number of ways to 17-color the faces of a tetrahedron.
Trivia: 7225 is an unremarkable number.
Fecha histórica: October 12th is the day in 1979 that the lowest recorded non-tornadic atmospheric pressure, 87.0 kPa (870 mbar or 25.69 inHg), occurred in the Western Pacific during Typhoon Tip.