225676631 has 2 divisors, whose sum is σ = 225676632. Its totient is φ = 225676630.

The previous prime is 225676613. The next prime is 225676639. The reversal of 225676631 is 136676522.

Together with previous prime (225676613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225676631 - 2⁶ = 225676567 is a prime.

It is a super-2 number, since 2×225676631² = 101859883559020322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225676639) 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 as a sum of consecutive naturals, namely, 112838315 + 112838316.

It is an arithmetic number, because the mean of its divisors is an integer number (112838316).

Almost surely, 2^225676631 is an apocalyptic number.

225676631 is a deficient number, since it is larger than the sum of its proper divisors (1).

225676631 is an equidigital number, since it uses as much as digits as its factorization.

225676631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 38.

The square root of 225676631 is about 15022.5374354668. The cubic root of 225676631 is about 608.8292792531.

It can be divided in two parts, 2256 and 76631, that added together give a palindrome (78887).

The spelling of 225676631 in words is "two hundred twenty-five million, six hundred seventy-six thousand, six hundred thirty-one".