28920875125 has 16 divisors (see below), whose sum is σ = 36101325312. Its totient is φ = 23131525200.

The previous prime is 28920875069. The next prime is 28920875141. The reversal of 28920875125 is 52157802982.

It is not a de Polignac number, because 28920875125 - 2²⁷ = 28786657397 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 15 ways as a sum of consecutive naturals, for example, 594472 + ... + 641278.

It is an arithmetic number, because the mean of its divisors is an integer number (2256332832).

Almost surely, 2^28920875125 is an apocalyptic number.

28920875125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28920875125 is a deficient number, since it is larger than the sum of its proper divisors (7180450187).

28920875125 is an equidigital number, since it uses as much as digits as its factorization.

28920875125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51765 (or 51755 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 49.

The spelling of 28920875125 in words is "twenty-eight billion, nine hundred twenty million, eight hundred seventy-five thousand, one hundred twenty-five".