28255831085 has 16 divisors (see below), whose sum is σ = 35388524160. Its totient is φ = 21617386560.

The previous prime is 28255831073. The next prime is 28255831147. The reversal of 28255831085 is 58013855282.

It is not a de Polignac number, because 28255831085 - 2¹⁴ = 28255814701 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 600515 + ... + 645855.

It is an arithmetic number, because the mean of its divisors is an integer number (2211782760).

Almost surely, 2^28255831085 is an apocalyptic number.

It is an amenable number.

28255831085 is a deficient number, since it is larger than the sum of its proper divisors (7132693075).

28255831085 is a wasteful number, since it uses less digits than its factorization.

28255831085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50788.

The product of its (nonzero) digits is 768000, while the sum is 47.

The spelling of 28255831085 in words is "twenty-eight billion, two hundred fifty-five million, eight hundred thirty-one thousand, eighty-five".