51510420325 has 96 divisors (see below), whose sum is σ = 83393162496. Its totient is φ = 30629007360.

The previous prime is 51510420301. The next prime is 51510420371. The reversal of 51510420325 is 52302401515.

It is not a de Polignac number, because 51510420325 - 2⁷ = 51510420197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51510420293 and 51510420302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 29894914 + ... + 29896636.

It is an arithmetic number, because the mean of its divisors is an integer number (868678776).

Almost surely, 2^51510420325 is an apocalyptic number.

It is an amenable number.

51510420325 is a deficient number, since it is larger than the sum of its proper divisors (31882742171).

51510420325 is a wasteful number, since it uses less digits than its factorization.

51510420325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2543 (or 2538 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The spelling of 51510420325 in words is "fifty-one billion, five hundred ten million, four hundred twenty thousand, three hundred twenty-five".