225891224 has 16 divisors (see below), whose sum is σ = 456126720. Its totient is φ = 104257440.

The previous prime is 225891221. The next prime is 225891227. The reversal of 225891224 is 422198522.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (225891221) and next prime (225891227).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225891221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1085912 + ... + 1086119.

It is an arithmetic number, because the mean of its divisors is an integer number (28507920).

Almost surely, 2^225891224 is an apocalyptic number.

It is an amenable number.

225891224 is an abundant number, since it is smaller than the sum of its proper divisors (230235496).

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

225891224 is a wasteful number, since it uses less digits than its factorization.

225891224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2172050 (or 2172046 counting only the distinct ones).

The product of its digits is 23040, while the sum is 35.

The square root of 225891224 is about 15029.6781069988. The cubic root of 225891224 is about 609.0221940911.

The spelling of 225891224 in words is "two hundred twenty-five million, eight hundred ninety-one thousand, two hundred twenty-four".