31551112525 has 24 divisors (see below), whose sum is σ = 39271754304. Its totient is φ = 25145366400.

The previous prime is 31551112499. The next prime is 31551112573. The reversal of 31551112525 is 52521115513.

It is not a de Polignac number, because 31551112525 - 2¹¹ = 31551110477 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 23 ways as a sum of consecutive naturals, for example, 8065320 + ... + 8069230.

It is an arithmetic number, because the mean of its divisors is an integer number (1636323096).

Almost surely, 2^31551112525 is an apocalyptic number.

It is an amenable number.

31551112525 is a deficient number, since it is larger than the sum of its proper divisors (7720641779).

31551112525 is a wasteful number, since it uses less digits than its factorization.

31551112525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5061 (or 5056 counting only the distinct ones).

The product of its digits is 7500, while the sum is 31.

The spelling of 31551112525 in words is "thirty-one billion, five hundred fifty-one million, one hundred twelve thousand, five hundred twenty-five".