22305005 has 16 divisors (see below), whose sum is σ = 27506304. Its totient is φ = 17357760.

The previous prime is 22304999. The next prime is 22305007. The reversal of 22305005 is 50050322.

It is not a de Polignac number, because 22305005 - 2⁸ = 22304749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22305007) 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 in 15 ways as a sum of consecutive naturals, for example, 29087 + ... + 29843.

It is an arithmetic number, because the mean of its divisors is an integer number (1719144).

Almost surely, 2^22305005 is an apocalyptic number.

It is an amenable number.

22305005 is a deficient number, since it is larger than the sum of its proper divisors (5201299).

22305005 is an equidigital number, since it uses as much as digits as its factorization.

22305005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916.

The product of its (nonzero) digits is 300, while the sum is 17.

The square root of 22305005 is about 4722.8174853577. The cubic root of 22305005 is about 281.4928976541.

Adding to 22305005 its reverse (50050322), we get a palindrome (72355327).

The spelling of 22305005 in words is "twenty-two million, three hundred five thousand, five".