22200525 has 18 divisors (see below), whose sum is σ = 39764010. Its totient is φ = 11840160.

The previous prime is 22200509. The next prime is 22200527. The reversal of 22200525 is 52500222.

It can be written as a sum of positive squares in 3 ways, for example, as 101124 + 22099401 = 318^2 + 4701^2 .

It is not a de Polignac number, because 22200525 - 2⁴ = 22200509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22200498 and 22200507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22200527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 49110 + ... + 49559.

Almost surely, 2^22200525 is an apocalyptic number.

22200525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22200525 is a deficient number, since it is larger than the sum of its proper divisors (17563485).

22200525 is a wasteful number, since it uses less digits than its factorization.

22200525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98685 (or 98677 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 22200525 is about 4711.7433079488. The cubic root of 22200525 is about 281.0526912416.

Adding to 22200525 its reverse (52500222), we get a palindrome (74700747).

The spelling of 22200525 in words is "twenty-two million, two hundred thousand, five hundred twenty-five".