634015625 has 14 divisors (see below), whose sum is σ = 792528918. Its totient is φ = 507200000.

The previous prime is 634015567. The next prime is 634015651. The reversal of 634015625 is 526510436.

634015625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 7 ways, for example, as 633176569 + 839056 = 25163^2 + 916^2 .

It is not a de Polignac number, because 634015625 - 2²⁸ = 365580169 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 634015591 and 634015600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 4664 + ... + 35913.

Almost surely, 2^634015625 is an apocalyptic number.

It is an amenable number.

634015625 is a deficient number, since it is larger than the sum of its proper divisors (158513293).

634015625 is an frugal number, since it uses more digits than its factorization.

634015625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40607 (or 40582 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 634015625 is about 25179.6668961287. Note that the first 3 decimals coincide. The cubic root of 634015625 is about 859.0794300350.

The spelling of 634015625 in words is "six hundred thirty-four million, fifteen thousand, six hundred twenty-five".