225144668 has 24 divisors (see below), whose sum is σ = 476777952. Its totient is φ = 90814464.

The previous prime is 225144641. The next prime is 225144671. The reversal of 225144668 is 866441522.

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, 236021 + ... + 236972.

It is an arithmetic number, because the mean of its divisors is an integer number (19865748).

Almost surely, 2^225144668 is an apocalyptic number.

225144668 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

225144668 is an abundant number, since it is smaller than the sum of its proper divisors (251633284).

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

225144668 is a wasteful number, since it uses less digits than its factorization.

225144668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473021 (or 473019 counting only the distinct ones).

The product of its digits is 92160, while the sum is 38.

The square root of 225144668 is about 15004.8214917739. The cubic root of 225144668 is about 608.3505271844.

The spelling of 225144668 in words is "two hundred twenty-five million, one hundred forty-four thousand, six hundred sixty-eight".