28005505255 has 32 divisors (see below), whose sum is σ = 41423889024. Its totient is φ = 17700028416.

The previous prime is 28005505247. The next prime is 28005505261. The reversal of 28005505255 is 55250550082.

It is not a de Polignac number, because 28005505255 - 2³ = 28005505247 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 260487 + ... + 351943.

It is an arithmetic number, because the mean of its divisors is an integer number (1294496532).

Almost surely, 2^28005505255 is an apocalyptic number.

28005505255 is a deficient number, since it is larger than the sum of its proper divisors (13418383769).

28005505255 is a wasteful number, since it uses less digits than its factorization.

28005505255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92155.

The product of its (nonzero) digits is 100000, while the sum is 37.

It can be divided in two parts, 2800 and 5505255, that added together give a palindrome (5508055).

The spelling of 28005505255 in words is "twenty-eight billion, five million, five hundred five thousand, two hundred fifty-five".