625928 has 8 divisors (see below), whose sum is σ = 1173630. Its totient is φ = 312960.

The previous prime is 625927. The next prime is 625939. The reversal of 625928 is 829526.

It can be written as a sum of positive squares in only one way, i.e., 357604 + 268324 = 598^2 + 518^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×625928² = 783571722368, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 625894 and 625903.

It is not an unprimeable number, because it can be changed into a prime (625927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39113 + ... + 39128.

2⁶²⁵⁹²⁸ is an apocalyptic number.

It is an amenable number.

625928 is a deficient number, since it is larger than the sum of its proper divisors (547702).

625928 is a wasteful number, since it uses less digits than its factorization.

625928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78247 (or 78243 counting only the distinct ones).

The product of its digits is 8640, while the sum is 32.

The square root of 625928 is about 791.1561160732. The cubic root of 625928 is about 85.5410926122.

The spelling of 625928 in words is "six hundred twenty-five thousand, nine hundred twenty-eight".