22125613 has 2 divisors, whose sum is σ = 22125614. Its totient is φ = 22125612.

The previous prime is 22125601. The next prime is 22125617. The reversal of 22125613 is 31652122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11744329 + 10381284 = 3427^2 + 3222^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22125613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22125617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11062806 + 11062807.

It is an arithmetic number, because the mean of its divisors is an integer number (11062807).

Almost surely, 2^22125613 is an apocalyptic number.

It is an amenable number.

22125613 is a deficient number, since it is larger than the sum of its proper divisors (1).

22125613 is an equidigital number, since it uses as much as digits as its factorization.

22125613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 22.

The square root of 22125613 is about 4703.7870912702. The cubic root of 22125613 is about 280.7362130648.

Adding to 22125613 its reverse (31652122), we get a palindrome (53777735).

The spelling of 22125613 in words is "twenty-two million, one hundred twenty-five thousand, six hundred thirteen".