31545502225 has 24 divisors (see below), whose sum is σ = 40969074240. Its totient is φ = 24049312320.

The previous prime is 31545502189. The next prime is 31545502297. The reversal of 31545502225 is 52220554513.

It is not a de Polignac number, because 31545502225 - 2⁷ = 31545502097 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52702 + ... + 256648.

It is an arithmetic number, because the mean of its divisors is an integer number (1707044760).

Almost surely, 2^31545502225 is an apocalyptic number.

It is an amenable number.

31545502225 is a deficient number, since it is larger than the sum of its proper divisors (9423572015).

31545502225 is a wasteful number, since it uses less digits than its factorization.

31545502225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204249 (or 204244 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 34.

The spelling of 31545502225 in words is "thirty-one billion, five hundred forty-five million, five hundred two thousand, two hundred twenty-five".