51780162925 has 6 divisors (see below), whose sum is σ = 64207402058. Its totient is φ = 41424130320.

The previous prime is 51780162809. The next prime is 51780162937. The reversal of 51780162925 is 52926108715.

51780162925 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 7389465444 + 44390697481 = 85962^2 + 210691^2 .

It is not a de Polignac number, because 51780162925 - 2²⁵ = 51746608493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1035603234 + ... + 1035603283.

Almost surely, 2^51780162925 is an apocalyptic number.

It is an amenable number.

51780162925 is a deficient number, since it is larger than the sum of its proper divisors (12427239133).

51780162925 is a wasteful number, since it uses less digits than its factorization.

51780162925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2071206527 (or 2071206522 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 46.

The spelling of 51780162925 in words is "fifty-one billion, seven hundred eighty million, one hundred sixty-two thousand, nine hundred twenty-five".