225397224 has 96 divisors (see below), whose sum is σ = 660670920. Its totient is φ = 69009408.

The previous prime is 225397219. The next prime is 225397241. The reversal of 225397224 is 422793522.

It can be written as a sum of positive squares in 4 ways, for example, as 166874724 + 58522500 = 12918^2 + 7650^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 240084 + ... + 241020.

Almost surely, 2^225397224 is an apocalyptic number.

225397224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225397224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330335460).

225397224 is an abundant number, since it is smaller than the sum of its proper divisors (435273696).

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

225397224 is a wasteful number, since it uses less digits than its factorization.

225397224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219 (or 1212 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 225397224 is about 15013.2349611934. The cubic root of 225397224 is about 608.5779145548.

The spelling of 225397224 in words is "two hundred twenty-five million, three hundred ninety-seven thousand, two hundred twenty-four".