225239808 has 72 divisors (see below), whose sum is σ = 602023408. Its totient is φ = 74760192.

The previous prime is 225239789. The next prime is 225239837. The reversal of 225239808 is 808932522.

It is a super-2 number, since 2×225239808² = 101465942215753728, which contains 22 as substring.

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, 239916 + ... + 240852.

Almost surely, 2^225239808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225239808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301011704).

225239808 is an abundant number, since it is smaller than the sum of its proper divisors (376783600).

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

225239808 is an equidigital number, since it uses as much as digits as its factorization.

225239808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269 (or 1255 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 225239808 is about 15007.9914712129. The cubic root of 225239808 is about 608.4362059008.

The spelling of 225239808 in words is "two hundred twenty-five million, two hundred thirty-nine thousand, eight hundred eight".