225718398 has 24 divisors (see below), whose sum is σ = 489403200. Its totient is φ = 75186144.

The previous prime is 225718357. The next prime is 225718421. The reversal of 225718398 is 893817522.

It is a happy number.

225718398 is a `hidden beast` number, since 2 + 257 + 1 + 8 + 398 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28098 + ... + 35226.

It is an arithmetic number, because the mean of its divisors is an integer number (20391800).

Almost surely, 2^225718398 is an apocalyptic number.

225718398 is an abundant number, since it is smaller than the sum of its proper divisors (263684802).

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

225718398 is a wasteful number, since it uses less digits than its factorization.

225718398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8896 (or 8893 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 225718398 is about 15023.9275157996. The cubic root of 225718398 is about 608.8668365370.

The spelling of 225718398 in words is "two hundred twenty-five million, seven hundred eighteen thousand, three hundred ninety-eight".