631270625 has 10 divisors (see below), whose sum is σ = 788836554. Its totient is φ = 505016000.

The previous prime is 631270589. The next prime is 631270631. The reversal of 631270625 is 526072136.

It can be written as a sum of positive squares in 5 ways, for example, as 301230736 + 330039889 = 17356^2 + 18167^2 .

It is not a de Polignac number, because 631270625 - 2⁶ = 631270561 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 631270591 and 631270600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 504392 + ... + 505641.

Almost surely, 2^631270625 is an apocalyptic number.

It is an amenable number.

631270625 is a deficient number, since it is larger than the sum of its proper divisors (157565929).

631270625 is an equidigital number, since it uses as much as digits as its factorization.

631270625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010053 (or 1010038 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 631270625 is about 25125.0995022905. The cubic root of 631270625 is about 857.8378283956.

The spelling of 631270625 in words is "six hundred thirty-one million, two hundred seventy thousand, six hundred twenty-five".