625688375 has 16 divisors (see below), whose sum is σ = 840927360. Its totient is φ = 462045600.

The previous prime is 625688363. The next prime is 625688381. The reversal of 625688375 is 573886526.

It is not a de Polignac number, because 625688375 - 2²⁸ = 357252919 is a prime.

It is a super-2 number, since 2×625688375² = 782971885220281250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190895 + ... + 194144.

It is an arithmetic number, because the mean of its divisors is an integer number (52557960).

Almost surely, 2^625688375 is an apocalyptic number.

625688375 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

625688375 is a deficient number, since it is larger than the sum of its proper divisors (215238985).

625688375 is a wasteful number, since it uses less digits than its factorization.

625688375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385067 (or 385057 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 50.

The square root of 625688375 is about 25013.7637112051. The cubic root of 625688375 is about 855.3017527523.

The spelling of 625688375 in words is "six hundred twenty-five million, six hundred eighty-eight thousand, three hundred seventy-five".