31252225425 has 24 divisors (see below), whose sum is σ = 51761225760. Its totient is φ = 16638537600.

The previous prime is 31252225423. The next prime is 31252225429. The reversal of 31252225425 is 52452225213.

It is not a de Polignac number, because 31252225425 - 2¹ = 31252225423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31252225423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 323491 + ... + 408840.

It is an arithmetic number, because the mean of its divisors is an integer number (2156717740).

Almost surely, 2^31252225425 is an apocalyptic number.

It is an amenable number.

31252225425 is a deficient number, since it is larger than the sum of its proper divisors (20509000335).

31252225425 is a wasteful number, since it uses less digits than its factorization.

31252225425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732913 (or 732908 counting only the distinct ones).

The product of its digits is 48000, while the sum is 33.

The spelling of 31252225425 in words is "thirty-one billion, two hundred fifty-two million, two hundred twenty-five thousand, four hundred twenty-five".