51320422025 has 12 divisors (see below), whose sum is σ = 65831714700. Its totient is φ = 39640601280.

The previous prime is 51320422007. The next prime is 51320422037. The reversal of 51320422025 is 52022402315.

It can be written as a sum of positive squares in 6 ways, for example, as 12085924096 + 39234497929 = 109936^2 + 198077^2 .

It is not a de Polignac number, because 51320422025 - 2²⁰ = 51319373449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51320421985 and 51320422003.

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, 35392670 + ... + 35394119.

It is an arithmetic number, because the mean of its divisors is an integer number (5485976225).

Almost surely, 2^51320422025 is an apocalyptic number.

It is an amenable number.

51320422025 is a deficient number, since it is larger than the sum of its proper divisors (14511292675).

51320422025 is a wasteful number, since it uses less digits than its factorization.

51320422025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70786828 (or 70786823 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The spelling of 51320422025 in words is "fifty-one billion, three hundred twenty million, four hundred twenty-two thousand, twenty-five".