51464678825 has 12 divisors (see below), whose sum is σ = 72932802240. Its totient is φ = 35290065360.

The previous prime is 51464678819. The next prime is 51464678851. The reversal of 51464678825 is 52887646415.

It is not a de Polignac number, because 51464678825 - 2³⁴ = 34284809641 is a prime.

It is a super-2 number, since 2×51464678825² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 147041765 + ... + 147042114.

It is an arithmetic number, because the mean of its divisors is an integer number (6077733520).

Almost surely, 2^51464678825 is an apocalyptic number.

It is an amenable number.

51464678825 is a deficient number, since it is larger than the sum of its proper divisors (21468123415).

51464678825 is a wasteful number, since it uses less digits than its factorization.

51464678825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294083896 (or 294083891 counting only the distinct ones).

The product of its digits is 12902400, while the sum is 56.

The spelling of 51464678825 in words is "fifty-one billion, four hundred sixty-four million, six hundred seventy-eight thousand, eight hundred twenty-five".