225301231 has 2 divisors, whose sum is σ = 225301232. Its totient is φ = 225301230.

The previous prime is 225301207. The next prime is 225301249. The reversal of 225301231 is 132103522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225301231 - 2¹¹ = 225299183 is a prime.

It is a super-2 number, since 2×225301231² = 101521289380230722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 225301199 and 225301208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225301291) 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 as a sum of consecutive naturals, namely, 112650615 + 112650616.

It is an arithmetic number, because the mean of its divisors is an integer number (112650616).

Almost surely, 2^225301231 is an apocalyptic number.

225301231 is a deficient number, since it is larger than the sum of its proper divisors (1).

225301231 is an equidigital number, since it uses as much as digits as its factorization.

225301231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 225301231 is about 15010.0376748361. The cubic root of 225301231 is about 608.4915078192.

Adding to 225301231 its reverse (132103522), we get a palindrome (357404753).

The spelling of 225301231 in words is "two hundred twenty-five million, three hundred one thousand, two hundred thirty-one".