22502275 has 6 divisors (see below), whose sum is σ = 27902852. Its totient is φ = 18001800.

The previous prime is 22502273. The next prime is 22502299. The reversal of 22502275 is 57220522.

It is not a de Polignac number, because 22502275 - 2¹ = 22502273 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 900091 = 22502275 / (2 + 2 + 5 + 0 + 2 + 2 + 7 + 5).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22502273) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 450021 + ... + 450070.

Almost surely, 2^22502275 is an apocalyptic number.

22502275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22502275 is a deficient number, since it is larger than the sum of its proper divisors (5400577).

22502275 is an equidigital number, since it uses as much as digits as its factorization.

22502275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900101 (or 900096 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 22502275 is about 4743.6562902470. The cubic root of 22502275 is about 282.3203232635.

Adding to 22502275 its reverse (57220522), we get a palindrome (79722797).

The spelling of 22502275 in words is "twenty-two million, five hundred two thousand, two hundred seventy-five".