31248750025 has 12 divisors (see below), whose sum is σ = 38751205900. Its totient is φ = 24997222080.

The previous prime is 31248750023. The next prime is 31248750041. The reversal of 31248750025 is 52005784213.

It can be written as a sum of positive squares in 6 ways, for example, as 625150009 + 30623600016 = 25003^2 + 174996^2 .

It is not a de Polignac number, because 31248750025 - 2¹ = 31248750023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31248750023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 402031 + ... + 473419.

Almost surely, 2^31248750025 is an apocalyptic number.

It is an amenable number.

31248750025 is a deficient number, since it is larger than the sum of its proper divisors (7502455875).

31248750025 is a wasteful number, since it uses less digits than its factorization.

31248750025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88908 (or 88903 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The spelling of 31248750025 in words is "thirty-one billion, two hundred forty-eight million, seven hundred fifty thousand, twenty-five".