630725 has 6 divisors (see below), whose sum is σ = 782130. Its totient is φ = 504560.

The previous prime is 630719. The next prime is 630733. The reversal of 630725 is 527036.

It can be written as a sum of positive squares in 3 ways, for example, as 289 + 630436 = 17^2 + 794^2 .

It is not a de Polignac number, because 630725 - 2⁴ = 630709 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 630725.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12590 + ... + 12639.

It is an arithmetic number, because the mean of its divisors is an integer number (130355).

2⁶³⁰⁷²⁵ is an apocalyptic number.

It is an amenable number.

630725 is a deficient number, since it is larger than the sum of its proper divisors (151405).

630725 is a wasteful number, since it uses less digits than its factorization.

630725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25239 (or 25234 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 630725 is about 794.1819690726. The cubic root of 630725 is about 85.7590606014.

The spelling of 630725 in words is "six hundred thirty thousand, seven hundred twenty-five".