225579124478 has 16 divisors (see below), whose sum is σ = 350954528544. Its totient is φ = 108654645600.

The previous prime is 225579124453. The next prime is 225579124549. The reversal of 225579124478 is 874421975522.

It is a happy number.

It is a super-2 number, since 2×225579124478² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15083450 + ... + 15098397.

It is an arithmetic number, because the mean of its divisors is an integer number (21934658034).

Almost surely, 2^225579124478 is an apocalyptic number.

225579124478 is a deficient number, since it is larger than the sum of its proper divisors (125375404066).

225579124478 is a wasteful number, since it uses less digits than its factorization.

225579124478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30181987.

The product of its digits is 11289600, while the sum is 56.

The spelling of 225579124478 in words is "two hundred twenty-five billion, five hundred seventy-nine million, one hundred twenty-four thousand, four hundred seventy-eight".