22507249 has 4 divisors (see below), whose sum is σ = 22625280. Its totient is φ = 22389220.

The previous prime is 22507217. The next prime is 22507253. The reversal of 22507249 is 94270522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22507249 - 2⁵ = 22507217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22507249.

It is not an unprimeable number, because it can be changed into a prime (22507259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58729 + ... + 59110.

It is an arithmetic number, because the mean of its divisors is an integer number (5656320).

Almost surely, 2^22507249 is an apocalyptic number.

It is an amenable number.

22507249 is a deficient number, since it is larger than the sum of its proper divisors (118031).

22507249 is a wasteful number, since it uses less digits than its factorization.

22507249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118030.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 22507249 is about 4744.1805404095. The cubic root of 22507249 is about 282.3411234986.

The spelling of 22507249 in words is "twenty-two million, five hundred seven thousand, two hundred forty-nine".