22506275 has 24 divisors (see below), whose sum is σ = 30664704. Its totient is φ = 16250400.

The previous prime is 22506271. The next prime is 22506277. The reversal of 22506275 is 57260522.

It is not a de Polignac number, because 22506275 - 2² = 22506271 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22506271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61142 + ... + 61508.

It is an arithmetic number, because the mean of its divisors is an integer number (1277696).

Almost surely, 2^22506275 is an apocalyptic number.

22506275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22506275 is a deficient number, since it is larger than the sum of its proper divisors (8158429).

22506275 is a wasteful number, since it uses less digits than its factorization.

22506275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611 (or 606 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 22506275 is about 4744.0778872190. The cubic root of 22506275 is about 282.3370506742.

Adding to 22506275 its reverse (57260522), we get a palindrome (79766797).

The spelling of 22506275 in words is "twenty-two million, five hundred six thousand, two hundred seventy-five".