225994989211 has 2 divisors, whose sum is σ = 225994989212. Its totient is φ = 225994989210.

The previous prime is 225994989203. The next prime is 225994989257. The reversal of 225994989211 is 112989499522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225994989211 - 2³ = 225994989203 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225994989211.

It is not a weakly prime, because it can be changed into another prime (225994989811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112997494605 + 112997494606.

It is an arithmetic number, because the mean of its divisors is an integer number (112997494606).

Almost surely, 2^225994989211 is an apocalyptic number.

225994989211 is a deficient number, since it is larger than the sum of its proper divisors (1).

225994989211 is an equidigital number, since it uses as much as digits as its factorization.

225994989211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8398080, while the sum is 61.

The spelling of 225994989211 in words is "two hundred twenty-five billion, nine hundred ninety-four million, nine hundred eighty-nine thousand, two hundred eleven".