22925209 has 2 divisors, whose sum is σ = 22925210. Its totient is φ = 22925208.

The previous prime is 22925179. The next prime is 22925219. The reversal of 22925209 is 90252922.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20675209 + 2250000 = 4547^2 + 1500^2 .

It is a cyclic number.

It is not a de Polignac number, because 22925209 - 2¹¹ = 22923161 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22925219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11462604 + 11462605.

It is an arithmetic number, because the mean of its divisors is an integer number (11462605).

Almost surely, 2^22925209 is an apocalyptic number.

It is an amenable number.

22925209 is a deficient number, since it is larger than the sum of its proper divisors (1).

22925209 is an equidigital number, since it uses as much as digits as its factorization.

22925209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 22925209 is about 4788.0276732701. The cubic root of 22925209 is about 284.0781086817.

The spelling of 22925209 in words is "twenty-two million, nine hundred twenty-five thousand, two hundred nine".