31525225132 has 24 divisors (see below), whose sum is σ = 55487452160. Its totient is φ = 15671929680.

The previous prime is 31525225093. The next prime is 31525225133. The reversal of 31525225132 is 23152252513.

It is a junction number, because it is equal to n+sod(n) for n = 31525225094 and 31525225103.

It is not an unprimeable number, because it can be changed into a prime (31525225133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 453469 + ... + 518347.

Almost surely, 2^31525225132 is an apocalyptic number.

It is an amenable number.

31525225132 is a deficient number, since it is larger than the sum of its proper divisors (23962227028).

31525225132 is a wasteful number, since it uses less digits than its factorization.

31525225132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65581 (or 65579 counting only the distinct ones).

The product of its digits is 18000, while the sum is 31.

Adding to 31525225132 its reverse (23152252513), we get a palindrome (54677477645).

The spelling of 31525225132 in words is "thirty-one billion, five hundred twenty-five million, two hundred twenty-five thousand, one hundred thirty-two".