28055255525 has 24 divisors (see below), whose sum is σ = 38876761728. Its totient is φ = 19906160000.

The previous prime is 28055255477. The next prime is 28055255531. The reversal of 28055255525 is 52555255082.

It is a happy number.

It is not a de Polignac number, because 28055255525 - 2²⁴ = 28038478309 is a prime.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

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 (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1232861 + ... + 1255410.

It is an arithmetic number, because the mean of its divisors is an integer number (1619865072).

Almost surely, 2^28055255525 is an apocalyptic number.

28055255525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28055255525 is a deficient number, since it is larger than the sum of its proper divisors (10821506203).

28055255525 is a wasteful number, since it uses less digits than its factorization.

28055255525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2488333 (or 2488328 counting only the distinct ones).

The product of its (nonzero) digits is 1000000, while the sum is 44.

The spelling of 28055255525 in words is "twenty-eight billion, fifty-five million, two hundred fifty-five thousand, five hundred twenty-five".