51504412225 has 24 divisors (see below), whose sum is σ = 73011487680. Its totient is φ = 35306483520.

The previous prime is 51504412199. The next prime is 51504412259. The reversal of 51504412225 is 52221440515.

It is not a de Polignac number, because 51504412225 - 2²⁵ = 51470857793 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 549654 + ... + 636496.

It is an arithmetic number, because the mean of its divisors is an integer number (3042145320).

Almost surely, 2^51504412225 is an apocalyptic number.

It is an amenable number.

51504412225 is a deficient number, since it is larger than the sum of its proper divisors (21507075455).

51504412225 is a wasteful number, since it uses less digits than its factorization.

51504412225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90249 (or 90244 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 31.

The spelling of 51504412225 in words is "fifty-one billion, five hundred four million, four hundred twelve thousand, two hundred twenty-five".