51242431425 has 48 divisors (see below), whose sum is σ = 89304284160. Its totient is φ = 25854776640.

The previous prime is 51242431417. The next prime is 51242431459. The reversal of 51242431425 is 52413424215.

It is not a de Polignac number, because 51242431425 - 2³ = 51242431417 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1011244 + ... + 1060706.

It is an arithmetic number, because the mean of its divisors is an integer number (1860505920).

Almost surely, 2^51242431425 is an apocalyptic number.

It is an amenable number.

51242431425 is a deficient number, since it is larger than the sum of its proper divisors (38061852735).

51242431425 is a wasteful number, since it uses less digits than its factorization.

51242431425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50222 (or 50217 counting only the distinct ones).

The product of its digits is 38400, while the sum is 33.

The spelling of 51242431425 in words is "fifty-one billion, two hundred forty-two million, four hundred thirty-one thousand, four hundred twenty-five".