22008025 has 18 divisors (see below), whose sum is σ = 29556330. Its totient is φ = 16248960.

The previous prime is 22007989. The next prime is 22008037. The reversal of 22008025 is 52080022.

It can be written as a sum of positive squares in 9 ways, for example, as 7054336 + 14953689 = 2656^2 + 3867^2 .

It is not a de Polignac number, because 22008025 - 2²¹ = 19910873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22007993 and 22008011.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1621 + ... + 6829.

Almost surely, 2^22008025 is an apocalyptic number.

22008025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22008025 is a deficient number, since it is larger than the sum of its proper divisors (7548305).

22008025 is a wasteful number, since it uses less digits than its factorization.

22008025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5245 (or 5227 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 22008025 is about 4691.2711496992. The cubic root of 22008025 is about 280.2379991747.

Adding to 22008025 its reverse (52080022), we get a palindrome (74088047).

The spelling of 22008025 in words is "twenty-two million, eight thousand, twenty-five".