22225747 has 2 divisors, whose sum is σ = 22225748. Its totient is φ = 22225746.

The previous prime is 22225739. The next prime is 22225759. The reversal of 22225747 is 74752222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22225747 - 2³ = 22225739 is a prime.

It is not a weakly prime, because it can be changed into another prime (22225717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11112873 + 11112874.

It is an arithmetic number, because the mean of its divisors is an integer number (11112874).

Almost surely, 2^22225747 is an apocalyptic number.

22225747 is a deficient number, since it is larger than the sum of its proper divisors (1).

22225747 is an equidigital number, since it uses as much as digits as its factorization.

22225747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15680, while the sum is 31.

The square root of 22225747 is about 4714.4190522269. The cubic root of 22225747 is about 281.1590855450.

Adding to 22225747 its reverse (74752222), we get a palindrome (96977969).

The spelling of 22225747 in words is "twenty-two million, two hundred twenty-five thousand, seven hundred forty-seven".