22725979 has 2 divisors, whose sum is σ = 22725980. Its totient is φ = 22725978.

The previous prime is 22725929. The next prime is 22726003. The reversal of 22725979 is 97952722.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22725979 - 2¹⁵ = 22693211 is a prime.

It is not a weakly prime, because it can be changed into another prime (22725929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11362989 + 11362990.

It is an arithmetic number, because the mean of its divisors is an integer number (11362990).

Almost surely, 2^22725979 is an apocalyptic number.

22725979 is a deficient number, since it is larger than the sum of its proper divisors (1).

22725979 is an equidigital number, since it uses as much as digits as its factorization.

22725979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 158760, while the sum is 43.

The square root of 22725979 is about 4767.1772570359. The cubic root of 22725979 is about 283.2527926401.

The spelling of 22725979 in words is "twenty-two million, seven hundred twenty-five thousand, nine hundred seventy-nine".