72225256 has 16 divisors (see below), whose sum is σ = 135743040. Its totient is φ = 36027120.

The previous prime is 72225239. The next prime is 72225277. The reversal of 72225256 is 65252227.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7026 + ... + 13921.

It is an arithmetic number, because the mean of its divisors is an integer number (8483940).

Almost surely, 2^72225256 is an apocalyptic number.

It is an amenable number.

72225256 is a deficient number, since it is larger than the sum of its proper divisors (63517784).

72225256 is a wasteful number, since it uses less digits than its factorization.

72225256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21384 (or 21380 counting only the distinct ones).

The product of its digits is 16800, while the sum is 31.

The square root of 72225256 is about 8498.5443459454. The cubic root of 72225256 is about 416.4501568136.

The spelling of 72225256 in words is "seventy-two million, two hundred twenty-five thousand, two hundred fifty-six".