225604444420 has 48 divisors (see below), whose sum is σ = 475858551168. Its totient is φ = 89844527360.

The previous prime is 225604444399. The next prime is 225604444459. The reversal of 225604444420 is 24444406522.

It is a self number, because there is not a number n which added to its sum of digits gives 225604444420.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5309379 + ... + 5351701.

It is an arithmetic number, because the mean of its divisors is an integer number (9913719816).

Almost surely, 2^225604444420 is an apocalyptic number.

225604444420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225604444420 is an abundant number, since it is smaller than the sum of its proper divisors (250254106748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225604444420 is a wasteful number, since it uses less digits than its factorization.

225604444420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43500 (or 43498 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 37.

The spelling of 225604444420 in words is "two hundred twenty-five billion, six hundred four million, four hundred forty-four thousand, four hundred twenty".