31475287425 has 48 divisors (see below), whose sum is σ = 55106472960. Its totient is φ = 15807954240.

The previous prime is 31475287369. The next prime is 31475287469. The reversal of 31475287425 is 52478257413.

It is a happy number.

It is not a de Polignac number, because 31475287425 - 2⁷ = 31475287297 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 171844 + ... + 304106.

It is an arithmetic number, because the mean of its divisors is an integer number (1148051520).

Almost surely, 2^31475287425 is an apocalyptic number.

It is an amenable number.

31475287425 is a deficient number, since it is larger than the sum of its proper divisors (23631185535).

31475287425 is a wasteful number, since it uses less digits than its factorization.

31475287425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132462 (or 132457 counting only the distinct ones).

The product of its digits is 1881600, while the sum is 48.

The spelling of 31475287425 in words is "thirty-one billion, four hundred seventy-five million, two hundred eighty-seven thousand, four hundred twenty-five".