31012425025 has 12 divisors (see below), whose sum is σ = 38918727792. Its totient is φ = 24511023440.

The previous prime is 31012424999. The next prime is 31012425077. The reversal of 31012425025 is 52052421013.

It is a de Polignac number, because none of the positive numbers 2^k-31012425025 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian 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, 7470799 + ... + 7474948.

It is an arithmetic number, because the mean of its divisors is an integer number (3243227316).

Almost surely, 2^31012425025 is an apocalyptic number.

It is an amenable number.

31012425025 is a deficient number, since it is larger than the sum of its proper divisors (7906302767).

31012425025 is a wasteful number, since it uses less digits than its factorization.

31012425025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14945840 (or 14945835 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 31012425025 its reverse (52052421013), we get a palindrome (83064846038).

The spelling of 31012425025 in words is "thirty-one billion, twelve million, four hundred twenty-five thousand, twenty-five".