225218113 has 2 divisors, whose sum is σ = 225218114. Its totient is φ = 225218112.

The previous prime is 225218107. The next prime is 225218143. The reversal of 225218113 is 311812522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144793089 + 80425024 = 12033^2 + 8968^2 .

It is a cyclic number.

It is not a de Polignac number, because 225218113 - 2¹⁷ = 225087041 is a prime.

It is not a weakly prime, because it can be changed into another prime (225218143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112609056 + 112609057.

It is an arithmetic number, because the mean of its divisors is an integer number (112609057).

Almost surely, 2^225218113 is an apocalyptic number.

It is an amenable number.

225218113 is a deficient number, since it is larger than the sum of its proper divisors (1).

225218113 is an equidigital number, since it uses as much as digits as its factorization.

225218113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 960, while the sum is 25.

The square root of 225218113 is about 15007.2686722135. The cubic root of 225218113 is about 608.4166705036.

The spelling of 225218113 in words is "two hundred twenty-five million, two hundred eighteen thousand, one hundred thirteen".