225433231 has 4 divisors (see below), whose sum is σ = 225779112. Its totient is φ = 225087352.

The previous prime is 225433217. The next prime is 225433237. The reversal of 225433231 is 132334522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 225433231 - 2⁵ = 225433199 is a prime.

It is a super-2 number, since 2×225433231² = 101640283278198722, 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 = 225433196 and 225433205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225433237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171961 + ... + 173266.

It is an arithmetic number, because the mean of its divisors is an integer number (56444778).

Almost surely, 2^225433231 is an apocalyptic number.

225433231 is a deficient number, since it is larger than the sum of its proper divisors (345881).

225433231 is an equidigital number, since it uses as much as digits as its factorization.

225433231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345880.

The product of its digits is 4320, while the sum is 25.

The square root of 225433231 is about 15014.4340885696. The cubic root of 225433231 is about 608.6103194173.

Adding to 225433231 its reverse (132334522), we get a palindrome (357767753).

The spelling of 225433231 in words is "two hundred twenty-five million, four hundred thirty-three thousand, two hundred thirty-one".