22225639 has 2 divisors, whose sum is σ = 22225640. Its totient is φ = 22225638.

The previous prime is 22225607. The next prime is 22225661. The reversal of 22225639 is 93652222.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22225639 - 2⁵ = 22225607 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22225639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22225669) 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 as a sum of consecutive naturals, namely, 11112819 + 11112820.

It is an arithmetic number, because the mean of its divisors is an integer number (11112820).

Almost surely, 2^22225639 is an apocalyptic number.

22225639 is a deficient number, since it is larger than the sum of its proper divisors (1).

22225639 is an equidigital number, since it uses as much as digits as its factorization.

22225639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 31.

The square root of 22225639 is about 4714.4075979915. The cubic root of 22225639 is about 281.1586301388.

The spelling of 22225639 in words is "twenty-two million, two hundred twenty-five thousand, six hundred thirty-nine".