225645417 has 6 divisors (see below), whose sum is σ = 325932282. Its totient is φ = 150430272.

The previous prime is 225645391. The next prime is 225645419. The reversal of 225645417 is 714546522.

It is a happy number.

225645417 is a `hidden beast` number, since 2 + 2 + 5 + 645 + 4 + 1 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 169754841 + 55890576 = 13029^2 + 7476^2 .

It is not a de Polignac number, because 225645417 - 2⁶ = 225645353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225645419) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12535848 + ... + 12535865.

It is an arithmetic number, because the mean of its divisors is an integer number (54322047).

Almost surely, 2^225645417 is an apocalyptic number.

It is an amenable number.

225645417 is a deficient number, since it is larger than the sum of its proper divisors (100286865).

225645417 is a wasteful number, since it uses less digits than its factorization.

225645417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25071719 (or 25071716 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 225645417 is about 15021.4984938254. The cubic root of 225645417 is about 608.8012083015.

The spelling of 225645417 in words is "two hundred twenty-five million, six hundred forty-five thousand, four hundred seventeen".