22541225 has 18 divisors (see below), whose sum is σ = 32516334. Its totient is φ = 15456000.

The previous prime is 22541221. The next prime is 22541227. The reversal of 22541225 is 52214522.

It can be written as a sum of positive squares in 3 ways, for example, as 1132096 + 21409129 = 1064^2 + 4627^2 .

It is not a de Polignac number, because 22541225 - 2² = 22541221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22541225.

It is not an unprimeable number, because it can be changed into a prime (22541221) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7976 + ... + 10425.

It is an arithmetic number, because the mean of its divisors is an integer number (1806463).

Almost surely, 2^22541225 is an apocalyptic number.

22541225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22541225 is a deficient number, since it is larger than the sum of its proper divisors (9975109).

22541225 is a wasteful number, since it uses less digits than its factorization.

22541225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18425 (or 18413 counting only the distinct ones).

The product of its digits is 1600, while the sum is 23.

The square root of 22541225 is about 4747.7599981465. The cubic root of 22541225 is about 282.4831221806.

Adding to 22541225 its reverse (52214522), we get a palindrome (74755747).

The spelling of 22541225 in words is "twenty-two million, five hundred forty-one thousand, two hundred twenty-five".