51432531525 has 60 divisors (see below), whose sum is σ = 95361342912. Its totient is φ = 27404624160.

The previous prime is 51432531523. The next prime is 51432531539. The reversal of 51432531525 is 52513523415.

51432531525 is a `hidden beast` number, since 5 + 14 + 325 + 315 + 2 + 5 = 666.

It is not a de Polignac number, because 51432531525 - 2¹ = 51432531523 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51432531525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51432531523) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 2222062 + ... + 2245088.

Almost surely, 2^51432531525 is an apocalyptic number.

It is an amenable number.

51432531525 is a deficient number, since it is larger than the sum of its proper divisors (43928811387).

51432531525 is a wasteful number, since it uses less digits than its factorization.

51432531525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24152 (or 24138 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

The spelling of 51432531525 in words is "fifty-one billion, four hundred thirty-two million, five hundred thirty-one thousand, five hundred twenty-five".