51000432625 has 8 divisors (see below), whose sum is σ = 63648540072. Its totient is φ = 40800346000.

The previous prime is 51000432617. The next prime is 51000432649. The reversal of 51000432625 is 52623400015.

It can be written as a sum of positive squares in 4 ways, for example, as 343027441 + 50657405184 = 18521^2 + 225072^2 .

It is not a de Polignac number, because 51000432625 - 2³ = 51000432617 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51000432593 and 51000432602.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204001606 + ... + 204001855.

It is an arithmetic number, because the mean of its divisors is an integer number (7956067509).

Almost surely, 2^51000432625 is an apocalyptic number.

It is an amenable number.

51000432625 is a deficient number, since it is larger than the sum of its proper divisors (12648107447).

51000432625 is an equidigital number, since it uses as much as digits as its factorization.

51000432625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408003476 (or 408003466 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The spelling of 51000432625 in words is "fifty-one billion, four hundred thirty-two thousand, six hundred twenty-five".