51939202925 has 12 divisors (see below), whose sum is σ = 64408181556. Its totient is φ = 41549059200.

The previous prime is 51939202879. The next prime is 51939202957. The reversal of 51939202925 is 52920293915.

It can be written as a sum of positive squares in 6 ways, for example, as 26770276 + 51912432649 = 5174^2 + 227843^2 .

It is not a de Polignac number, because 51939202925 - 2³² = 47644235629 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51939202925.

It is a congruent number.

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, 513545 + ... + 606305.

It is an arithmetic number, because the mean of its divisors is an integer number (5367348463).

Almost surely, 2^51939202925 is an apocalyptic number.

It is an amenable number.

51939202925 is a deficient number, since it is larger than the sum of its proper divisors (12468978631).

51939202925 is a wasteful number, since it uses less digits than its factorization.

51939202925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115168 (or 115163 counting only the distinct ones).

The product of its (nonzero) digits is 437400, while the sum is 47.

The spelling of 51939202925 in words is "fifty-one billion, nine hundred thirty-nine million, two hundred two thousand, nine hundred twenty-five".