51520302525 has 24 divisors (see below), whose sum is σ = 85457731744. Its totient is φ = 27387979200.

The previous prime is 51520302469. The next prime is 51520302551. The reversal of 51520302525 is 52520302515.

It is not a de Polignac number, because 51520302525 - 2¹⁰ = 51520301501 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51520302492 and 51520302501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1095766 + ... + 1141815.

Almost surely, 2^51520302525 is an apocalyptic number.

It is an amenable number.

51520302525 is a deficient number, since it is larger than the sum of its proper divisors (33937429219).

51520302525 is a wasteful number, since it uses less digits than its factorization.

51520302525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2237901 (or 2237896 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 30.

The spelling of 51520302525 in words is "fifty-one billion, five hundred twenty million, three hundred two thousand, five hundred twenty-five".