225203231 has 8 divisors (see below), whose sum is σ = 246063744. Its totient is φ = 204407320.

The previous prime is 225203161. The next prime is 225203239. The reversal of 225203231 is 132302522.

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 225203231 - 2²² = 221008927 is a prime.

It is a super-2 number, since 2×225203231² = 101432990505678722, which 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 (225203239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8705 + ... + 22938.

It is an arithmetic number, because the mean of its divisors is an integer number (30757968).

Almost surely, 2^225203231 is an apocalyptic number.

225203231 is a deficient number, since it is larger than the sum of its proper divisors (20860513).

225203231 is a wasteful number, since it uses less digits than its factorization.

225203231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32301.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 225203231 is about 15006.7728376224. The cubic root of 225203231 is about 608.4032691891.

Adding to 225203231 its reverse (132302522), we get a palindrome (357505753).

The spelling of 225203231 in words is "two hundred twenty-five million, two hundred three thousand, two hundred thirty-one".