225664423 has 2 divisors, whose sum is σ = 225664424. Its totient is φ = 225664422.

The previous prime is 225664403. The next prime is 225664441. The reversal of 225664423 is 324466522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225664423 - 2¹³ = 225656231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225664403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112832211 + 112832212.

It is an arithmetic number, because the mean of its divisors is an integer number (112832212).

Almost surely, 2^225664423 is an apocalyptic number.

225664423 is a deficient number, since it is larger than the sum of its proper divisors (1).

225664423 is an equidigital number, since it uses as much as digits as its factorization.

225664423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 34.

The square root of 225664423 is about 15022.1311071366. The cubic root of 225664423 is about 608.8183008282.

The spelling of 225664423 in words is "two hundred twenty-five million, six hundred sixty-four thousand, four hundred twenty-three".