630547925 has 18 divisors (see below), whose sum is σ = 909534978. Its totient is φ = 432374880.

The previous prime is 630547919. The next prime is 630547937. The reversal of 630547925 is 529745036.

It can be written as a sum of positive squares in 3 ways, for example, as 130667761 + 499880164 = 11431^2 + 22358^2 .

It is not a de Polignac number, because 630547925 - 2⁴ = 630547909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 256142 + ... + 258591.

It is an arithmetic number, because the mean of its divisors is an integer number (50529721).

Almost surely, 2^630547925 is an apocalyptic number.

It is an amenable number.

630547925 is a deficient number, since it is larger than the sum of its proper divisors (278987053).

630547925 is a wasteful number, since it uses less digits than its factorization.

630547925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514757 (or 514745 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 41.

The square root of 630547925 is about 25110.7133510779. The cubic root of 630547925 is about 857.5103427879.

The spelling of 630547925 in words is "six hundred thirty million, five hundred forty-seven thousand, nine hundred twenty-five".