51425513232 has 160 divisors (see below), whose sum is σ = 139698058752. Its totient is φ = 16282109952.

The previous prime is 51425513231. The next prime is 51425513239. The reversal of 51425513232 is 23231552415.

51425513232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51425513232² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51425513193 and 51425513202.

It is not an unprimeable number, because it can be changed into a prime (51425513231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64523458 + ... + 64524254.

Almost surely, 2^51425513232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51425513232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69849029376).

51425513232 is an abundant number, since it is smaller than the sum of its proper divisors (88272545520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51425513232 is a wasteful number, since it uses less digits than its factorization.

51425513232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665 (or 1659 counting only the distinct ones).

The product of its digits is 36000, while the sum is 33.

The spelling of 51425513232 in words is "fifty-one billion, four hundred twenty-five million, five hundred thirteen thousand, two hundred thirty-two".