225525623 has 2 divisors, whose sum is σ = 225525624. Its totient is φ = 225525622.

The previous prime is 225525617. The next prime is 225525661. The reversal of 225525623 is 326525522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225525623 - 2²⁶ = 158416759 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225525623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225525613) 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, 112762811 + 112762812.

It is an arithmetic number, because the mean of its divisors is an integer number (112762812).

Almost surely, 2^225525623 is an apocalyptic number.

225525623 is a deficient number, since it is larger than the sum of its proper divisors (1).

225525623 is an equidigital number, since it uses as much as digits as its factorization.

225525623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36000, while the sum is 32.

The square root of 225525623 is about 15017.5105460259. The cubic root of 225525623 is about 608.6934527457.

The spelling of 225525623 in words is "two hundred twenty-five million, five hundred twenty-five thousand, six hundred twenty-three".