625052664 has 24 divisors (see below), whose sum is σ = 1692851160. Its totient is φ = 208350864.

The previous prime is 625052653. The next prime is 625052699. The reversal of 625052664 is 466250526.

625052664 is a `hidden beast` number, since 625 + 0 + 5 + 26 + 6 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4340572 + ... + 4340715.

It is an arithmetic number, because the mean of its divisors is an integer number (70535465).

Almost surely, 2^625052664 is an apocalyptic number.

It is an amenable number.

625052664 is an abundant number, since it is smaller than the sum of its proper divisors (1067798496).

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

625052664 is a wasteful number, since it uses less digits than its factorization.

625052664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8681299 (or 8681292 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 625052664 is about 25001.0532578130. The cubic root of 625052664 is about 855.0119871101.

The spelling of 625052664 in words is "six hundred twenty-five million, fifty-two thousand, six hundred sixty-four".