22258509 has 16 divisors (see below), whose sum is σ = 36527232. Its totient is φ = 11740608.

The previous prime is 22258501. The next prime is 22258529. The reversal of 22258509 is 90585222.

It is not a de Polignac number, because 22258509 - 2³ = 22258501 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22258509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22258501) 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 in 15 ways as a sum of consecutive naturals, for example, 40494 + ... + 41039.

It is an arithmetic number, because the mean of its divisors is an integer number (2282952).

Almost surely, 2^22258509 is an apocalyptic number.

It is an amenable number.

22258509 is a deficient number, since it is larger than the sum of its proper divisors (14268723).

22258509 is a wasteful number, since it uses less digits than its factorization.

22258509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81556.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 22258509 is about 4717.8924320082. The cubic root of 22258509 is about 281.2971658182.

The spelling of 22258509 in words is "twenty-two million, two hundred fifty-eight thousand, five hundred nine".