225668972 has 6 divisors (see below), whose sum is σ = 394920708. Its totient is φ = 112834484.

The previous prime is 225668969. The next prime is 225668987. The reversal of 225668972 is 279866522.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28208618 + ... + 28208625.

It is an arithmetic number, because the mean of its divisors is an integer number (65820118).

Almost surely, 2^225668972 is an apocalyptic number.

It is an amenable number.

225668972 is a deficient number, since it is larger than the sum of its proper divisors (169251736).

225668972 is a wasteful number, since it uses less digits than its factorization.

225668972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56417247 (or 56417245 counting only the distinct ones).

The product of its digits is 725760, while the sum is 47.

The square root of 225668972 is about 15022.2825163156. The cubic root of 225668972 is about 608.8223917046.

The spelling of 225668972 in words is "two hundred twenty-five million, six hundred sixty-eight thousand, nine hundred seventy-two".