28871446525 has 12 divisors (see below), whose sum is σ = 35802744192. Its totient is φ = 23095769840.

The previous prime is 28871446507. The next prime is 28871446529. The reversal of 28871446525 is 52564417882.

It is not a de Polignac number, because 28871446525 - 2⁷ = 28871446397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28871446529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 672762 + ... + 714388.

It is an arithmetic number, because the mean of its divisors is an integer number (2983562016).

Almost surely, 2^28871446525 is an apocalyptic number.

28871446525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28871446525 is a deficient number, since it is larger than the sum of its proper divisors (6931297667).

28871446525 is a wasteful number, since it uses less digits than its factorization.

28871446525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69380 (or 69375 counting only the distinct ones).

The product of its digits is 4300800, while the sum is 52.

The spelling of 28871446525 in words is "twenty-eight billion, eight hundred seventy-one million, four hundred forty-six thousand, five hundred twenty-five".