28287525137 has 16 divisors (see below), whose sum is σ = 28943722368. Its totient is φ = 27639480960.

The previous prime is 28287525127. The next prime is 28287525151. The reversal of 28287525137 is 73152578282.

It is a cyclic number.

It is not a de Polignac number, because 28287525137 - 2¹⁰ = 28287524113 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28287525127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4313453 + ... + 4320005.

It is an arithmetic number, because the mean of its divisors is an integer number (1808982648).

Almost surely, 2^28287525137 is an apocalyptic number.

It is an amenable number.

28287525137 is a deficient number, since it is larger than the sum of its proper divisors (656197231).

28287525137 is a wasteful number, since it uses less digits than its factorization.

28287525137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7160.

The product of its digits is 1881600, while the sum is 50.

The spelling of 28287525137 in words is "twenty-eight billion, two hundred eighty-seven million, five hundred twenty-five thousand, one hundred thirty-seven".