51021510425 has 12 divisors (see below), whose sum is σ = 65307534336. Its totient is φ = 39500523600.

The previous prime is 51021510413. The next prime is 51021510437. The reversal of 51021510425 is 52401512015.

It is an interprime number because it is at equal distance from previous prime (51021510413) and next prime (51021510437).

It is not a de Polignac number, because 51021510425 - 2²² = 51017316121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51021510394 and 51021510403.

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, 32916329 + ... + 32917878.

It is an arithmetic number, because the mean of its divisors is an integer number (5442294528).

Almost surely, 2^51021510425 is an apocalyptic number.

It is an amenable number.

51021510425 is a deficient number, since it is larger than the sum of its proper divisors (14286023911).

51021510425 is a wasteful number, since it uses less digits than its factorization.

51021510425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65834248 (or 65834243 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 26.

The spelling of 51021510425 in words is "fifty-one billion, twenty-one million, five hundred ten thousand, four hundred twenty-five".