225891568 has 40 divisors (see below), whose sum is σ = 510408800. Its totient is φ = 96808320.

The previous prime is 225891539. The next prime is 225891569. The reversal of 225891568 is 865198522.

225891568 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225891569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15093 + ... + 26068.

It is an arithmetic number, because the mean of its divisors is an integer number (12760220).

Almost surely, 2^225891568 is an apocalyptic number.

225891568 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

225891568 is an abundant number, since it is smaller than the sum of its proper divisors (284517232).

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

225891568 is an equidigital number, since it uses as much as digits as its factorization.

225891568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41190 (or 41170 counting only the distinct ones).

The product of its digits is 345600, while the sum is 46.

The square root of 225891568 is about 15029.6895510187. The cubic root of 225891568 is about 609.0225032421.

The spelling of 225891568 in words is "two hundred twenty-five million, eight hundred ninety-one thousand, five hundred sixty-eight".