231651227425 has 12 divisors (see below), whose sum is σ = 289077128956. Its totient is φ = 184140590400.

The previous prime is 231651227419. The next prime is 231651227441. The reversal of 231651227425 is 524722156132.

It can be written as a sum of positive squares in 6 ways, for example, as 28812686049 + 202838541376 = 169743^2 + 450376^2 .

It is a de Polignac number, because none of the positive numbers 2^k-231651227425 is a prime.

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, 29505786 + ... + 29513635.

Almost surely, 2^231651227425 is an apocalyptic number.

231651227425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231651227425 is a deficient number, since it is larger than the sum of its proper divisors (57425901531).

231651227425 is a wasteful number, since it uses less digits than its factorization.

231651227425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59019588 (or 59019583 counting only the distinct ones).

The product of its digits is 201600, while the sum is 40.

The spelling of 231651227425 in words is "two hundred thirty-one billion, six hundred fifty-one million, two hundred twenty-seven thousand, four hundred twenty-five".