225977911 has 2 divisors, whose sum is σ = 225977912. Its totient is φ = 225977910.

The previous prime is 225977909. The next prime is 225977929. The reversal of 225977911 is 119779522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225977911 - 2¹ = 225977909 is a prime.

Together with 225977909, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225977971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112988955 + 112988956.

It is an arithmetic number, because the mean of its divisors is an integer number (112988956).

Almost surely, 2^225977911 is an apocalyptic number.

225977911 is a deficient number, since it is larger than the sum of its proper divisors (1).

225977911 is an equidigital number, since it uses as much as digits as its factorization.

225977911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 79380, while the sum is 43.

The square root of 225977911 is about 15032.5616912089. The cubic root of 225977911 is about 609.1000893335.

The spelling of 225977911 in words is "two hundred twenty-five million, nine hundred seventy-seven thousand, nine hundred eleven".