22505611 has 2 divisors, whose sum is σ = 22505612. Its totient is φ = 22505610.

The previous prime is 22505591. The next prime is 22505617. The reversal of 22505611 is 11650522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22505611 - 2⁵ = 22505579 is a prime.

It is not a weakly prime, because it can be changed into another prime (22505617) 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, 11252805 + 11252806.

It is an arithmetic number, because the mean of its divisors is an integer number (11252806).

Almost surely, 2^22505611 is an apocalyptic number.

22505611 is a deficient number, since it is larger than the sum of its proper divisors (1).

22505611 is an equidigital number, since it uses as much as digits as its factorization.

22505611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 22505611 is about 4744.0079047152. The cubic root of 22505611 is about 282.3342740612.

The spelling of 22505611 in words is "twenty-two million, five hundred five thousand, six hundred eleven".