225645579 has 6 divisors (see below), whose sum is σ = 325932516. Its totient is φ = 150430380.

The previous prime is 225645551. The next prime is 225645611. The reversal of 225645579 is 975546522.

225645579 is a `hidden beast` number, since 22 + 56 + 4 + 5 + 579 = 666.

It is not a de Polignac number, because 225645579 - 2²³ = 217256971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225640579) 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 5 ways as a sum of consecutive naturals, for example, 12535857 + ... + 12535874.

It is an arithmetic number, because the mean of its divisors is an integer number (54322086).

Almost surely, 2^225645579 is an apocalyptic number.

225645579 is a deficient number, since it is larger than the sum of its proper divisors (100286937).

225645579 is a wasteful number, since it uses less digits than its factorization.

225645579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25071737 (or 25071734 counting only the distinct ones).

The product of its digits is 756000, while the sum is 45.

The square root of 225645579 is about 15021.5038860961. The cubic root of 225645579 is about 608.8013539958.

The spelling of 225645579 in words is "two hundred twenty-five million, six hundred forty-five thousand, five hundred seventy-nine".