28017925555 has 16 divisors (see below), whose sum is σ = 34189356384. Its totient is φ = 22036135680.

The previous prime is 28017925553. The next prime is 28017925567. The reversal of 28017925555 is 55552971082.

It is not a de Polignac number, because 28017925555 - 2¹ = 28017925553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28017925499 and 28017925508.

It is not an unprimeable number, because it can be changed into a prime (28017925553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 635332 + ... + 677998.

It is an arithmetic number, because the mean of its divisors is an integer number (2136834774).

Almost surely, 2^28017925555 is an apocalyptic number.

28017925555 is a deficient number, since it is larger than the sum of its proper divisors (6171430829).

28017925555 is a wasteful number, since it uses less digits than its factorization.

28017925555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44886.

The product of its (nonzero) digits is 1260000, while the sum is 49.

The spelling of 28017925555 in words is "twenty-eight billion, seventeen million, nine hundred twenty-five thousand, five hundred fifty-five".