51530205625 has 40 divisors (see below), whose sum is σ = 66036611520. Its totient is φ = 40175688000.

The previous prime is 51530205613. The next prime is 51530205659. The reversal of 51530205625 is 52650203515.

It is not a de Polignac number, because 51530205625 - 2⁵ = 51530205593 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 13677492 + ... + 13681258.

It is an arithmetic number, because the mean of its divisors is an integer number (1650915288).

Almost surely, 2^51530205625 is an apocalyptic number.

It is an amenable number.

51530205625 is a deficient number, since it is larger than the sum of its proper divisors (14506405895).

51530205625 is an equidigital number, since it uses as much as digits as its factorization.

51530205625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4339 (or 4324 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 34.

The spelling of 51530205625 in words is "fifty-one billion, five hundred thirty million, two hundred five thousand, six hundred twenty-five".