225391404 has 48 divisors (see below), whose sum is σ = 612396288. Its totient is φ = 63181248.

The previous prime is 225391403. The next prime is 225391409. The reversal of 225391404 is 404193522.

It is not an unprimeable number, because it can be changed into a prime (225391403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20862 + ... + 29765.

It is an arithmetic number, because the mean of its divisors is an integer number (12758256).

Almost surely, 2^225391404 is an apocalyptic number.

It is an amenable number.

225391404 is an abundant number, since it is smaller than the sum of its proper divisors (387004884).

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

225391404 is a wasteful number, since it uses less digits than its factorization.

225391404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50694 (or 50692 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 225391404 is about 15013.0411309634. The cubic root of 225391404 is about 608.5726764631.

The spelling of 225391404 in words is "two hundred twenty-five million, three hundred ninety-one thousand, four hundred four".