28285425105 has 16 divisors (see below), whose sum is σ = 51721920384. Its totient is φ = 12930480000.

The previous prime is 28285425089. The next prime is 28285425167. The reversal of 28285425105 is 50152458282.

It is not a de Polignac number, because 28285425105 - 2⁴ = 28285425089 is a prime.

It is a super-3 number, since 3×28285425105³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 15 ways as a sum of consecutive naturals, for example, 134692396 + ... + 134692605.

It is an arithmetic number, because the mean of its divisors is an integer number (3232620024).

Almost surely, 2^28285425105 is an apocalyptic number.

It is an amenable number.

28285425105 is a deficient number, since it is larger than the sum of its proper divisors (23436495279).

28285425105 is a wasteful number, since it uses less digits than its factorization.

28285425105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269385016.

The product of its (nonzero) digits is 256000, while the sum is 42.

The spelling of 28285425105 in words is "twenty-eight billion, two hundred eighty-five million, four hundred twenty-five thousand, one hundred five".