42031660525 has 12 divisors (see below), whose sum is σ = 53527888852. Its totient is φ = 32716535040.

The previous prime is 42031660519. The next prime is 42031660577. The reversal of 42031660525 is 52506613024.

It can be written as a sum of positive squares in 6 ways, for example, as 5332212484 + 36699448041 = 73022^2 + 191571^2 .

It is not a de Polignac number, because 42031660525 - 2¹¹ = 42031658477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22718892 + ... + 22720741.

Almost surely, 2^42031660525 is an apocalyptic number.

It is an amenable number.

42031660525 is a deficient number, since it is larger than the sum of its proper divisors (11496228327).

42031660525 is a wasteful number, since it uses less digits than its factorization.

42031660525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45439680 (or 45439675 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

The spelling of 42031660525 in words is "forty-two billion, thirty-one million, six hundred sixty thousand, five hundred twenty-five".