225774216 has 56 divisors (see below), whose sum is σ = 634716030. Its totient is φ = 75256128.

The previous prime is 225774163. The next prime is 225774253. The reversal of 225774216 is 612477522.

It is a happy number.

225774216 is a `hidden beast` number, since 225 + 7 + 7 + 421 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 161036100 + 64738116 = 12690^2 + 8046^2 .

It is a super-2 number, since 2×225774216² = 101947993220829312, which contains 22 as substring.

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 13 ways as a sum of consecutive naturals, for example, 13525 + ... + 25188.

Almost surely, 2^225774216 is an apocalyptic number.

It is an amenable number.

225774216 is an abundant number, since it is smaller than the sum of its proper divisors (408941814).

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

225774216 is an equidigital number, since it uses as much as digits as its factorization.

225774216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38737 (or 38718 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 225774216 is about 15025.7850377276. The cubic root of 225774216 is about 608.9170213814.

The spelling of 225774216 in words is "two hundred twenty-five million, seven hundred seventy-four thousand, two hundred sixteen".