22504505 has 4 divisors (see below), whose sum is σ = 27005412. Its totient is φ = 18003600.

The previous prime is 22504483. The next prime is 22504529. The reversal of 22504505 is 50540522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12588304 + 9916201 = 3548^2 + 3149^2 .

It is not a de Polignac number, because 22504505 - 2¹⁴ = 22488121 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2250446 + ... + 2250455.

It is an arithmetic number, because the mean of its divisors is an integer number (6751353).

Almost surely, 2^22504505 is an apocalyptic number.

It is an amenable number.

22504505 is a deficient number, since it is larger than the sum of its proper divisors (4500907).

22504505 is an equidigital number, since it uses as much as digits as its factorization.

22504505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4500906.

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 22504505 is about 4743.8913351804. The cubic root of 22504505 is about 282.3296490394.

The spelling of 22504505 in words is "twenty-two million, five hundred four thousand, five hundred five".