225806177 has 2 divisors, whose sum is σ = 225806178. Its totient is φ = 225806176.

The previous prime is 225806167. The next prime is 225806197. The reversal of 225806177 is 771608522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198359056 + 27447121 = 14084^2 + 5239^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225806177 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225806177.

It is not a weakly prime, because it can be changed into another prime (225806107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112903088 + 112903089.

It is an arithmetic number, because the mean of its divisors is an integer number (112903089).

Almost surely, 2^225806177 is an apocalyptic number.

It is an amenable number.

225806177 is a deficient number, since it is larger than the sum of its proper divisors (1).

225806177 is an equidigital number, since it uses as much as digits as its factorization.

225806177 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 225806177 is about 15026.8485385326. The cubic root of 225806177 is about 608.9457531516.

The spelling of 225806177 in words is "two hundred twenty-five million, eight hundred six thousand, one hundred seventy-seven".