625438738 has 16 divisors (see below), whose sum is σ = 993807360. Its totient is φ = 294186816.

The previous prime is 625438703. The next prime is 625438771. The reversal of 625438738 is 837834526.

It is a super-2 number, since 2×625438738² = 782347229982065288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139195 + ... + 143617.

It is an arithmetic number, because the mean of its divisors is an integer number (62112960).

Almost surely, 2^625438738 is an apocalyptic number.

625438738 is a deficient number, since it is larger than the sum of its proper divisors (368368622).

625438738 is a wasteful number, since it uses less digits than its factorization.

625438738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8601.

The product of its digits is 967680, while the sum is 46.

The square root of 625438738 is about 25008.7732206120. The cubic root of 625438738 is about 855.1879882573.

The spelling of 625438738 in words is "six hundred twenty-five million, four hundred thirty-eight thousand, seven hundred thirty-eight".