225494217 has 24 divisors (see below), whose sum is σ = 362089728. Its totient is φ = 134287200.

The previous prime is 225494207. The next prime is 225494221. The reversal of 225494217 is 712494522.

225494217 is a `hidden beast` number, since 225 + 4 + 9 + 421 + 7 = 666.

It is not a de Polignac number, because 225494217 - 2¹² = 225490121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225494207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27459 + ... + 34712.

It is an arithmetic number, because the mean of its divisors is an integer number (15087072).

Almost surely, 2^225494217 is an apocalyptic number.

It is an amenable number.

225494217 is a deficient number, since it is larger than the sum of its proper divisors (136595511).

225494217 is a wasteful number, since it uses less digits than its factorization.

225494217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62221 (or 62218 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 225494217 is about 15016.4648636089. The cubic root of 225494217 is about 608.6651965122.

The spelling of 225494217 in words is "two hundred twenty-five million, four hundred ninety-four thousand, two hundred seventeen".