22508253 has 16 divisors (see below), whose sum is σ = 34056960. Its totient is φ = 14685408.

The previous prime is 22508251. The next prime is 22508267. The reversal of 22508253 is 35280522.

It is not a de Polignac number, because 22508253 - 2¹ = 22508251 is a prime.

It is a super-2 number, since 2×22508253² = 1013242906224018, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22508251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7600 + ... + 10137.

It is an arithmetic number, because the mean of its divisors is an integer number (2128560).

Almost surely, 2^22508253 is an apocalyptic number.

It is an amenable number.

22508253 is a deficient number, since it is larger than the sum of its proper divisors (11548707).

22508253 is a wasteful number, since it uses less digits than its factorization.

22508253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17793 (or 17787 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 22508253 is about 4744.2863530778. The cubic root of 22508253 is about 282.3453216464.

Adding to 22508253 its reverse (35280522), we get a palindrome (57788775).

The spelling of 22508253 in words is "twenty-two million, five hundred eight thousand, two hundred fifty-three".