225668247 has 16 divisors (see below), whose sum is σ = 344086272. Its totient is φ = 128874240.

The previous prime is 225668237. The next prime is 225668273. The reversal of 225668247 is 742866522.

It is not a de Polignac number, because 225668247 - 2¹² = 225664151 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 225668199 and 225668208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225668207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60583 + ... + 64199.

It is an arithmetic number, because the mean of its divisors is an integer number (21505392).

Almost surely, 2^225668247 is an apocalyptic number.

225668247 is a deficient number, since it is larger than the sum of its proper divisors (118418025).

225668247 is a wasteful number, since it uses less digits than its factorization.

225668247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6598.

The product of its digits is 322560, while the sum is 42.

The square root of 225668247 is about 15022.2583854759. The cubic root of 225668247 is about 608.8217397221.

The spelling of 225668247 in words is "two hundred twenty-five million, six hundred sixty-eight thousand, two hundred forty-seven".