225656162189 has 2 divisors, whose sum is σ = 225656162190. Its totient is φ = 225656162188.

The previous prime is 225656162183. The next prime is 225656162231. The reversal of 225656162189 is 981261656522.

225656162189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 217687564900 + 7968597289 = 466570^2 + 89267^2 .

It is a cyclic number.

It is not a de Polignac number, because 225656162189 - 2⁸ = 225656161933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225656162189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225656162183) 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, 112828081094 + 112828081095.

It is an arithmetic number, because the mean of its divisors is an integer number (112828081095).

Almost surely, 2^225656162189 is an apocalyptic number.

It is an amenable number.

225656162189 is a deficient number, since it is larger than the sum of its proper divisors (1).

225656162189 is an equidigital number, since it uses as much as digits as its factorization.

225656162189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3110400, while the sum is 53.

The spelling of 225656162189 in words is "two hundred twenty-five billion, six hundred fifty-six million, one hundred sixty-two thousand, one hundred eighty-nine".