225931797631 has 16 divisors (see below), whose sum is σ = 240300950400. Its totient is φ = 211683125248.

The previous prime is 225931797601. The next prime is 225931797659. The reversal of 225931797631 is 136797139522.

It is not a de Polignac number, because 225931797631 - 2⁵ = 225931797599 is a prime.

It is a super-2 number, since 2×225931797631² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225931797601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15956451 + ... + 15970603.

It is an arithmetic number, because the mean of its divisors is an integer number (15018809400).

Almost surely, 2^225931797631 is an apocalyptic number.

225931797631 is a deficient number, since it is larger than the sum of its proper divisors (14369152769).

225931797631 is a wasteful number, since it uses less digits than its factorization.

225931797631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18338.

The product of its digits is 4286520, while the sum is 55.

The spelling of 225931797631 in words is "two hundred twenty-five billion, nine hundred thirty-one million, seven hundred ninety-seven thousand, six hundred thirty-one".