225665767 has 2 divisors, whose sum is σ = 225665768. Its totient is φ = 225665766.

The previous prime is 225665749. The next prime is 225665773. The reversal of 225665767 is 767566522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225665767 - 2¹¹ = 225663719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225665567) 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, 112832883 + 112832884.

It is an arithmetic number, because the mean of its divisors is an integer number (112832884).

Almost surely, 2^225665767 is an apocalyptic number.

225665767 is a deficient number, since it is larger than the sum of its proper divisors (1).

225665767 is an equidigital number, since it uses as much as digits as its factorization.

225665767 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1058400, while the sum is 46.

The square root of 225665767 is about 15022.1758410691. The cubic root of 225665767 is about 608.8195094815.

The spelling of 225665767 in words is "two hundred twenty-five million, six hundred sixty-five thousand, seven hundred sixty-seven".