51551526425 has 24 divisors (see below), whose sum is σ = 73493379456. Its totient is φ = 35137923840.

The previous prime is 51551526407. The next prime is 51551526473. The reversal of 51551526425 is 52462515515.

It is not a de Polignac number, because 51551526425 - 2²⁴ = 51534749209 is a prime.

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, 852752 + ... + 911201.

It is an arithmetic number, because the mean of its divisors is an integer number (3062224144).

Almost surely, 2^51551526425 is an apocalyptic number.

It is an amenable number.

51551526425 is a deficient number, since it is larger than the sum of its proper divisors (21941853031).

51551526425 is a wasteful number, since it uses less digits than its factorization.

51551526425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1764137 (or 1764132 counting only the distinct ones).

The product of its digits is 300000, while the sum is 41.

The spelling of 51551526425 in words is "fifty-one billion, five hundred fifty-one million, five hundred twenty-six thousand, four hundred twenty-five".