625977972 has 36 divisors (see below), whose sum is σ = 1583161216. Its totient is φ = 208550160.

The previous prime is 625977943. The next prime is 625977973. The reversal of 625977972 is 279779526.

625977972 is a `hidden beast` number, since 625 + 9 + 7 + 7 + 9 + 7 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625977973) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 95133 + ... + 101499.

Almost surely, 2^625977972 is an apocalyptic number.

It is an amenable number.

625977972 is an abundant number, since it is smaller than the sum of its proper divisors (957183244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

625977972 is a wasteful number, since it uses less digits than its factorization.

625977972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9108 (or 9103 counting only the distinct ones).

The product of its digits is 3333960, while the sum is 54.

The square root of 625977972 is about 25019.5517945466. The cubic root of 625977972 is about 855.4336898991.

The spelling of 625977972 in words is "six hundred twenty-five million, nine hundred seventy-seven thousand, nine hundred seventy-two".