225636091 has 2 divisors, whose sum is σ = 225636092. Its totient is φ = 225636090.

The previous prime is 225636043. The next prime is 225636113. The reversal of 225636091 is 190636522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225636091 - 2¹¹ = 225634043 is a prime.

It is not a weakly prime, because it can be changed into another prime (225636041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112818045 + 112818046.

It is an arithmetic number, because the mean of its divisors is an integer number (112818046).

Almost surely, 2^225636091 is an apocalyptic number.

225636091 is a deficient number, since it is larger than the sum of its proper divisors (1).

225636091 is an equidigital number, since it uses as much as digits as its factorization.

225636091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 225636091 is about 15021.1880688579. The cubic root of 225636091 is about 608.7928208673.

The spelling of 225636091 in words is "two hundred twenty-five million, six hundred thirty-six thousand, ninety-one".