225442579 has 2 divisors, whose sum is σ = 225442580. Its totient is φ = 225442578.

The previous prime is 225442561. The next prime is 225442639. The reversal of 225442579 is 975244522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225442579 - 2²⁷ = 91224851 is a prime.

It is not a weakly prime, because it can be changed into another prime (225442079) 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, 112721289 + 112721290.

It is an arithmetic number, because the mean of its divisors is an integer number (112721290).

Almost surely, 2^225442579 is an apocalyptic number.

225442579 is a deficient number, since it is larger than the sum of its proper divisors (1).

225442579 is an equidigital number, since it uses as much as digits as its factorization.

225442579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 201600, while the sum is 40.

The square root of 225442579 is about 15014.7453857866. The cubic root of 225442579 is about 608.6187316800.

The spelling of 225442579 in words is "two hundred twenty-five million, four hundred forty-two thousand, five hundred seventy-nine".