28080055225 has 6 divisors (see below), whose sum is σ = 34819268510. Its totient is φ = 22464044160.

The previous prime is 28080055189. The next prime is 28080055229. The reversal of 28080055225 is 52255008082.

It can be written as a sum of positive squares in 3 ways, for example, as 2772654336 + 25307400889 = 52656^2 + 159083^2 .

It is not a de Polignac number, because 28080055225 - 2⁹ = 28080054713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28080055229) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 561601080 + ... + 561601129.

Almost surely, 2^28080055225 is an apocalyptic number.

28080055225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28080055225 is a deficient number, since it is larger than the sum of its proper divisors (6739213285).

28080055225 is a wasteful number, since it uses less digits than its factorization.

28080055225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123202219 (or 1123202214 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 37.

The spelling of 28080055225 in words is "twenty-eight billion, eighty million, fifty-five thousand, two hundred twenty-five".