51300642625 has 8 divisors (see below), whose sum is σ = 64023202152. Its totient is φ = 41040514000.

The previous prime is 51300642607. The next prime is 51300642641. The reversal of 51300642625 is 52624600315.

It can be written as a sum of positive squares in 4 ways, for example, as 1284003889 + 50016638736 = 35833^2 + 223644^2 .

It is not a de Polignac number, because 51300642625 - 2⁵ = 51300642593 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205202446 + ... + 205202695.

It is an arithmetic number, because the mean of its divisors is an integer number (8002900269).

Almost surely, 2^51300642625 is an apocalyptic number.

It is an amenable number.

51300642625 is a deficient number, since it is larger than the sum of its proper divisors (12722559527).

51300642625 is an equidigital number, since it uses as much as digits as its factorization.

51300642625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410405156 (or 410405146 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

The spelling of 51300642625 in words is "fifty-one billion, three hundred million, six hundred forty-two thousand, six hundred twenty-five".