22554505205 has 4 divisors (see below), whose sum is σ = 27065406252. Its totient is φ = 18043604160.

The previous prime is 22554505189. The next prime is 22554505229. The reversal of 22554505205 is 50250545522.

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 11370596689 + 11183908516 = 106633^2 + 105754^2 .

It is not a de Polignac number, because 22554505205 - 2⁴ = 22554505189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2255450516 + ... + 2255450525.

It is an arithmetic number, because the mean of its divisors is an integer number (6766351563).

Almost surely, 2^22554505205 is an apocalyptic number.

It is an amenable number.

22554505205 is a deficient number, since it is larger than the sum of its proper divisors (4510901047).

22554505205 is an equidigital number, since it uses as much as digits as its factorization.

22554505205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4510901046.

The product of its (nonzero) digits is 100000, while the sum is 35.

The spelling of 22554505205 in words is "twenty-two billion, five hundred fifty-four million, five hundred five thousand, two hundred five".