22495209 has 8 divisors (see below), whose sum is σ = 32720352. Its totient is φ = 13633440.

The previous prime is 22495177. The next prime is 22495229. The reversal of 22495209 is 90259422.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22495209 - 2⁵ = 22495177 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 681673 = 22495209 / (2 + 2 + 4 + 9 + 5 + 2 + 0 + 9).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22495209.

It is not an unprimeable number, because it can be changed into a prime (22495229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340804 + ... + 340869.

It is an arithmetic number, because the mean of its divisors is an integer number (4090044).

Almost surely, 2^22495209 is an apocalyptic number.

It is an amenable number.

22495209 is a deficient number, since it is larger than the sum of its proper divisors (10225143).

22495209 is a wasteful number, since it uses less digits than its factorization.

22495209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681687.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 22495209 is about 4742.9114476237. The cubic root of 22495209 is about 282.2907694481.

The spelling of 22495209 in words is "twenty-two million, four hundred ninety-five thousand, two hundred nine".