7239225 has 24 divisors (see below), whose sum is σ = 13679680. Its totient is φ = 3309120.

The previous prime is 7239187. The next prime is 7239233. The reversal of 7239225 is 5229327.

It is a happy number.

It is not a de Polignac number, because 7239225 - 2⁸ = 7238969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7239192 and 7239201.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6370 + ... + 7419.

Almost surely, 2^7239225 is an apocalyptic number.

7239225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7239225 is a deficient number, since it is larger than the sum of its proper divisors (6440455).

7239225 is a wasteful number, since it uses less digits than its factorization.

7239225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13809 (or 13804 counting only the distinct ones).

The product of its digits is 7560, while the sum is 30.

The square root of 7239225 is about 2690.5807923198. The cubic root of 7239225 is about 193.4479024326.

The spelling of 7239225 in words is "seven million, two hundred thirty-nine thousand, two hundred twenty-five".