625867689924 has 45 divisors (see below), whose sum is σ = 1636178996991. Its totient is φ = 208617816600.

The previous prime is 625867689913. The next prime is 625867689959. The reversal of 625867689924 is 429986768526.

It is a happy number.

The square root of 625867689924 is 791118.

It is a perfect power (a square), and thus also a powerful number.

625867689924 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×625867689924² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 14218149 + ... + 14262099.

Almost surely, 2^625867689924 is an apocalyptic number.

625867689924 is the 791118-th square number.

It is an amenable number.

625867689924 is an abundant number, since it is smaller than the sum of its proper divisors (1010311307067).

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

625867689924 is an frugal number, since it uses more digits than its factorization.

625867689924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87918 (or 43956 counting only the distinct ones).

The product of its digits is 627056640, while the sum is 72.

The spelling of 625867689924 in words is "six hundred twenty-five billion, eight hundred sixty-seven million, six hundred eighty-nine thousand, nine hundred twenty-four".