225518251111 has 2 divisors, whose sum is σ = 225518251112. Its totient is φ = 225518251110.

The previous prime is 225518251087. The next prime is 225518251157. The reversal of 225518251111 is 111152815522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225518251111 - 2¹⁹ = 225517726823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225518251181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112759125555 + 112759125556.

It is an arithmetic number, because the mean of its divisors is an integer number (112759125556).

Almost surely, 2^225518251111 is an apocalyptic number.

225518251111 is a deficient number, since it is larger than the sum of its proper divisors (1).

225518251111 is an equidigital number, since it uses as much as digits as its factorization.

225518251111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8000, while the sum is 34.

The spelling of 225518251111 in words is "two hundred twenty-five billion, five hundred eighteen million, two hundred fifty-one thousand, one hundred eleven".