225225531 has 6 divisors (see below), whose sum is σ = 325325780. Its totient is φ = 150150348.

The previous prime is 225225523. The next prime is 225225589. The reversal of 225225531 is 135522522.

It is not a de Polignac number, because 225225531 - 2³ = 225225523 is a prime.

It is a super-2 number, since 2×225225531² = 101453079628463922, 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 = 225225495 and 225225504.

It is not an unprimeable number, because it can be changed into a prime (225225521) 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 5 ways as a sum of consecutive naturals, for example, 12512521 + ... + 12512538.

Almost surely, 2^225225531 is an apocalyptic number.

225225531 is a deficient number, since it is larger than the sum of its proper divisors (100100249).

225225531 is a wasteful number, since it uses less digits than its factorization.

225225531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25025065 (or 25025062 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 225225531 is about 15007.5158170831. The cubic root of 225225531 is about 608.4233502288.

The spelling of 225225531 in words is "two hundred twenty-five million, two hundred twenty-five thousand, five hundred thirty-one".