225599623 has 4 divisors (see below), whose sum is σ = 226123488. Its totient is φ = 225075760.

The previous prime is 225599611. The next prime is 225599659. The reversal of 225599623 is 326995522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225599623 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225599623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225599683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261286 + ... + 262147.

It is an arithmetic number, because the mean of its divisors is an integer number (56530872).

Almost surely, 2^225599623 is an apocalyptic number.

225599623 is a deficient number, since it is larger than the sum of its proper divisors (523865).

225599623 is an equidigital number, since it uses as much as digits as its factorization.

225599623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523864.

The product of its digits is 291600, while the sum is 43.

The square root of 225599623 is about 15019.9741344651. The cubic root of 225599623 is about 608.7600207765.

The spelling of 225599623 in words is "two hundred twenty-five million, five hundred ninety-nine thousand, six hundred twenty-three".