312656725 has 6 divisors (see below), whose sum is σ = 387694370. Its totient is φ = 250125360.

The previous prime is 312656681. The next prime is 312656777. The reversal of 312656725 is 527656213.

It can be written as a sum of positive squares in 3 ways, for example, as 94828644 + 217828081 = 9738^2 + 14759^2 .

It is not a de Polignac number, because 312656725 - 2¹³ = 312648533 is a prime.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 6253110 + ... + 6253159.

Almost surely, 2^312656725 is an apocalyptic number.

It is an amenable number.

312656725 is a deficient number, since it is larger than the sum of its proper divisors (75037645).

312656725 is a wasteful number, since it uses less digits than its factorization.

312656725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12506279 (or 12506274 counting only the distinct ones).

The product of its digits is 75600, while the sum is 37.

The square root of 312656725 is about 17682.1018264232. The cubic root of 312656725 is about 678.7178297494.

The spelling of 312656725 in words is "three hundred twelve million, six hundred fifty-six thousand, seven hundred twenty-five".