22625561 has 16 divisors (see below), whose sum is σ = 27356160. Its totient is φ = 18280080.

The previous prime is 22625557. The next prime is 22625569. The reversal of 22625561 is 16552622.

It is not a de Polignac number, because 22625561 - 2² = 22625557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22625569) 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 15 ways as a sum of consecutive naturals, for example, 41090 + ... + 41636.

It is an arithmetic number, because the mean of its divisors is an integer number (1709760).

Almost surely, 2^22625561 is an apocalyptic number.

It is an amenable number.

22625561 is a deficient number, since it is larger than the sum of its proper divisors (4730599).

22625561 is a wasteful number, since it uses less digits than its factorization.

22625561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884.

The product of its digits is 7200, while the sum is 29.

The square root of 22625561 is about 4756.6333682553. The cubic root of 22625561 is about 282.8349789383.

The spelling of 22625561 in words is "twenty-two million, six hundred twenty-five thousand, five hundred sixty-one".