22225439 has 2 divisors, whose sum is σ = 22225440. Its totient is φ = 22225438.

The previous prime is 22225433. The next prime is 22225447. The reversal of 22225439 is 93452222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22225439 - 2¹² = 22221343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22225433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11112719 + 11112720.

It is an arithmetic number, because the mean of its divisors is an integer number (11112720).

Almost surely, 2^22225439 is an apocalyptic number.

22225439 is a deficient number, since it is larger than the sum of its proper divisors (1).

22225439 is an equidigital number, since it uses as much as digits as its factorization.

22225439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 29.

The square root of 22225439 is about 4714.3863863710. The cubic root of 22225439 is about 281.1577867900.

The spelling of 22225439 in words is "twenty-two million, two hundred twenty-five thousand, four hundred thirty-nine".