225858631 has 2 divisors, whose sum is σ = 225858632. Its totient is φ = 225858630.

The previous prime is 225858623. The next prime is 225858701. The reversal of 225858631 is 136858522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225858631 - 2³ = 225858623 is a prime.

It is a super-2 number, since 2×225858631² = 102024242394388322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225850631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112929315 + 112929316.

It is an arithmetic number, because the mean of its divisors is an integer number (112929316).

Almost surely, 2^225858631 is an apocalyptic number.

225858631 is a deficient number, since it is larger than the sum of its proper divisors (1).

225858631 is an equidigital number, since it uses as much as digits as its factorization.

225858631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 115200, while the sum is 40.

The square root of 225858631 is about 15028.5937798584. The cubic root of 225858631 is about 608.9929015038.

The spelling of 225858631 in words is "two hundred twenty-five million, eight hundred fifty-eight thousand, six hundred thirty-one".