31500664554225 has 12 divisors (see below), whose sum is σ = 52081098729776. Its totient is φ = 16800354428880.

The previous prime is 31500664554109. The next prime is 31500664554257. The reversal of 31500664554225 is 52245546600513.

It is not a de Polignac number, because 31500664554225 - 2¹⁴ = 31500664537841 is a prime.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 210004430287 + ... + 210004430436.

Almost surely, 2^{31500664554225} is an apocalyptic number.

It is an amenable number.

31500664554225 is a deficient number, since it is larger than the sum of its proper divisors (20580434175551).

31500664554225 is a wasteful number, since it uses less digits than its factorization.

31500664554225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420008860736 (or 420008860731 counting only the distinct ones).

The product of its (nonzero) digits is 4320000, while the sum is 48.

The spelling of 31500664554225 in words is "thirty-one trillion, five hundred billion, six hundred sixty-four million, five hundred fifty-four thousand, two hundred twenty-five".