22553221505 has 4 divisors (see below), whose sum is σ = 27063865812. Its totient is φ = 18042577200.

The previous prime is 22553221459. The next prime is 22553221541. The reversal of 22553221505 is 50512235522.

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 14125797904 + 8427423601 = 118852^2 + 91801^2 .

It is not a de Polignac number, because 22553221505 - 2⁶ = 22553221441 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, 2255322146 + ... + 2255322155.

It is an arithmetic number, because the mean of its divisors is an integer number (6765966453).

Almost surely, 2^22553221505 is an apocalyptic number.

It is an amenable number.

22553221505 is a deficient number, since it is larger than the sum of its proper divisors (4510644307).

22553221505 is an equidigital number, since it uses as much as digits as its factorization.

22553221505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4510644306.

The product of its (nonzero) digits is 30000, while the sum is 32.

The spelling of 22553221505 in words is "twenty-two billion, five hundred fifty-three million, two hundred twenty-one thousand, five hundred five".