31875347225 has 12 divisors (see below), whose sum is σ = 41850456444. Its totient is φ = 24000261120.

The previous prime is 31875347183. The next prime is 31875347239. The reversal of 31875347225 is 52274357813.

It can be written as a sum of positive squares in 6 ways, for example, as 13454224 + 31861893001 = 3668^2 + 178499^2 .

It is not a de Polignac number, because 31875347225 - 2²² = 31871152921 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31875347225.

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, 37499984 + ... + 37500833.

It is an arithmetic number, because the mean of its divisors is an integer number (3487538037).

Almost surely, 2^31875347225 is an apocalyptic number.

It is an amenable number.

31875347225 is a deficient number, since it is larger than the sum of its proper divisors (9975109219).

31875347225 is a wasteful number, since it uses less digits than its factorization.

31875347225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75000844 (or 75000839 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 47.

The spelling of 31875347225 in words is "thirty-one billion, eight hundred seventy-five million, three hundred forty-seven thousand, two hundred twenty-five".