22525121 has 8 divisors (see below), whose sum is σ = 23030784. Its totient is φ = 22025200.

The previous prime is 22525117. The next prime is 22525157. The reversal of 22525121 is 12152522.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22525121 - 2² = 22525117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22525093 and 22525102.

It is not an unprimeable number, because it can be changed into a prime (22524121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7040 + ... + 9726.

It is an arithmetic number, because the mean of its divisors is an integer number (2878848).

Almost surely, 2^22525121 is an apocalyptic number.

It is an amenable number.

22525121 is a deficient number, since it is larger than the sum of its proper divisors (505663).

22525121 is a wasteful number, since it uses less digits than its factorization.

22525121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2871.

The product of its digits is 400, while the sum is 20.

The square root of 22525121 is about 4746.0637374565. The cubic root of 22525121 is about 282.4158352140.

Adding to 22525121 its reverse (12152522), we get a palindrome (34677643).

The spelling of 22525121 in words is "twenty-two million, five hundred twenty-five thousand, one hundred twenty-one".