225256972 has 6 divisors (see below), whose sum is σ = 394199708. Its totient is φ = 112628484.

The previous prime is 225256961. The next prime is 225256991. The reversal of 225256972 is 279652522.

225256972 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28157118 + ... + 28157125.

Almost surely, 2^225256972 is an apocalyptic number.

It is an amenable number.

225256972 is a deficient number, since it is larger than the sum of its proper divisors (168942736).

225256972 is a wasteful number, since it uses less digits than its factorization.

225256972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56314247 (or 56314245 counting only the distinct ones).

The product of its digits is 151200, while the sum is 40.

The square root of 225256972 is about 15008.5632890027. The cubic root of 225256972 is about 608.4516604421.

The spelling of 225256972 in words is "two hundred twenty-five million, two hundred fifty-six thousand, nine hundred seventy-two".