225664727 has 2 divisors, whose sum is σ = 225664728. Its totient is φ = 225664726.

The previous prime is 225664723. The next prime is 225664759. The reversal of 225664727 is 727466522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225664727 - 2² = 225664723 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225664723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112832363 + 112832364.

It is an arithmetic number, because the mean of its divisors is an integer number (112832364).

Almost surely, 2^225664727 is an apocalyptic number.

225664727 is a deficient number, since it is larger than the sum of its proper divisors (1).

225664727 is an equidigital number, since it uses as much as digits as its factorization.

225664727 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 282240, while the sum is 41.

The square root of 225664727 is about 15022.1412255377. The cubic root of 225664727 is about 608.8185742145.

The spelling of 225664727 in words is "two hundred twenty-five million, six hundred sixty-four thousand, seven hundred twenty-seven".