28575853525 has 6 divisors (see below), whose sum is σ = 35434058402. Its totient is φ = 22860682800.

The previous prime is 28575853477. The next prime is 28575853541. The reversal of 28575853525 is 52535857582.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 290668401 + 28285185124 = 17049^2 + 168182^2 .

It is a de Polignac number, because none of the positive numbers 2^k-28575853525 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 5 ways as a sum of consecutive naturals, for example, 571517046 + ... + 571517095.

Almost surely, 2^28575853525 is an apocalyptic number.

28575853525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28575853525 is a deficient number, since it is larger than the sum of its proper divisors (6858204877).

28575853525 is a wasteful number, since it uses less digits than its factorization.

28575853525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143034151 (or 1143034146 counting only the distinct ones).

The product of its digits is 16800000, while the sum is 55.

The spelling of 28575853525 in words is "twenty-eight billion, five hundred seventy-five million, eight hundred fifty-three thousand, five hundred twenty-five".