225399894 has 16 divisors (see below), whose sum is σ = 461284032. Its totient is φ = 73385928.

The previous prime is 225399871. The next prime is 225399913. The reversal of 225399894 is 498993522.

It is a happy number.

It is a super-2 number, since 2×225399894² = 101610224430422472, which 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, 436564 + ... + 437079.

It is an arithmetic number, because the mean of its divisors is an integer number (28830252).

Almost surely, 2^225399894 is an apocalyptic number.

225399894 is an abundant number, since it is smaller than the sum of its proper divisors (235884138).

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

225399894 is a wasteful number, since it uses less digits than its factorization.

225399894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873691.

The product of its digits is 1399680, while the sum is 51.

The square root of 225399894 is about 15013.3238824719. The cubic root of 225399894 is about 608.5803175666.

The spelling of 225399894 in words is "two hundred twenty-five million, three hundred ninety-nine thousand, eight hundred ninety-four".