225123631 has 8 divisors (see below), whose sum is σ = 229402800. Its totient is φ = 220883520.

The previous prime is 225123623. The next prime is 225123649. The reversal of 225123631 is 136321522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 225123631 - 2³ = 225123623 is a prime.

It is a super-2 number, since 2×225123631² = 101361298469248322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 225123596 and 225123605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225123601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2005 + ... + 21313.

It is an arithmetic number, because the mean of its divisors is an integer number (28675350).

Almost surely, 2^225123631 is an apocalyptic number.

225123631 is a deficient number, since it is larger than the sum of its proper divisors (4279169).

225123631 is a wasteful number, since it uses less digits than its factorization.

225123631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19529.

The product of its digits is 2160, while the sum is 25.

The square root of 225123631 is about 15004.1204673916. The cubic root of 225123631 is about 608.3315789695.

The spelling of 225123631 in words is "two hundred twenty-five million, one hundred twenty-three thousand, six hundred thirty-one".