625764538 has 16 divisors (see below), whose sum is σ = 1079942400. Its totient is φ = 266384016.

The previous prime is 625764527. The next prime is 625764553. The reversal of 625764538 is 835467526.

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, 147906 + ... + 152077.

It is an arithmetic number, because the mean of its divisors is an integer number (67496400).

Almost surely, 2^625764538 is an apocalyptic number.

625764538 is a deficient number, since it is larger than the sum of its proper divisors (454177862).

625764538 is a wasteful number, since it uses less digits than its factorization.

625764538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300141.

The product of its digits is 1209600, while the sum is 46.

The square root of 625764538 is about 25015.2860867111. The cubic root of 625764538 is about 855.3364557061.

The spelling of 625764538 in words is "six hundred twenty-five million, seven hundred sixty-four thousand, five hundred thirty-eight".