28130926525 has 48 divisors (see below), whose sum is σ = 38506785408. Its totient is φ = 20259360000.

The previous prime is 28130926517. The next prime is 28130926531. The reversal of 28130926525 is 52562903182.

It is not a de Polignac number, because 28130926525 - 2³ = 28130926517 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2192880 + ... + 2205670.

It is an arithmetic number, because the mean of its divisors is an integer number (802224696).

Almost surely, 2^28130926525 is an apocalyptic number.

28130926525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28130926525 is a deficient number, since it is larger than the sum of its proper divisors (10375858883).

28130926525 is a wasteful number, since it uses less digits than its factorization.

28130926525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12982 (or 12977 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 43.

The spelling of 28130926525 in words is "twenty-eight billion, one hundred thirty million, nine hundred twenty-six thousand, five hundred twenty-five".