22565629 has 2 divisors, whose sum is σ = 22565630. Its totient is φ = 22565628.

The previous prime is 22565623. The next prime is 22565633. The reversal of 22565629 is 92656522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15194404 + 7371225 = 3898^2 + 2715^2 .

It is a cyclic number.

It is not a de Polignac number, because 22565629 - 2¹¹ = 22563581 is a prime.

It is a super-2 number, since 2×22565629² = 1018415224331282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22565623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11282814 + 11282815.

It is an arithmetic number, because the mean of its divisors is an integer number (11282815).

Almost surely, 2^22565629 is an apocalyptic number.

It is an amenable number.

22565629 is a deficient number, since it is larger than the sum of its proper divisors (1).

22565629 is an equidigital number, since it uses as much as digits as its factorization.

22565629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 37.

The square root of 22565629 is about 4750.3293570025. The cubic root of 22565629 is about 282.5850277900.

The spelling of 22565629 in words is "twenty-two million, five hundred sixty-five thousand, six hundred twenty-nine".