630491525 has 12 divisors (see below), whose sum is σ = 815801952. Its totient is φ = 482462640.

The previous prime is 630491503. The next prime is 630491549. The reversal of 630491525 is 525194036.

It is not a de Polignac number, because 630491525 - 2²⁰ = 629442949 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 11 ways as a sum of consecutive naturals, for example, 547679 + ... + 548828.

It is an arithmetic number, because the mean of its divisors is an integer number (67983496).

Almost surely, 2^630491525 is an apocalyptic number.

It is an amenable number.

630491525 is a deficient number, since it is larger than the sum of its proper divisors (185310427).

630491525 is a wasteful number, since it uses less digits than its factorization.

630491525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096540 (or 1096535 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 630491525 is about 25109.5902993259. The cubic root of 630491525 is about 857.4847750642.

The spelling of 630491525 in words is "six hundred thirty million, four hundred ninety-one thousand, five hundred twenty-five".