28030025555 has 8 divisors (see below), whose sum is σ = 38441177952. Its totient is φ = 19220588928.

The previous prime is 28030025531. The next prime is 28030025567. The reversal of 28030025555 is 55552003082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28030025555 - 2¹⁴ = 28030009171 is a prime.

It is a super-2 number, since 2×28030025555² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 800857873 = 28030025555 / (2 + 8 + 0 + 3 + 0 + 0 + 2 + 5 + 5 + 5 + 5).

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 400428902 + ... + 400428971.

It is an arithmetic number, because the mean of its divisors is an integer number (4805147244).

Almost surely, 2^28030025555 is an apocalyptic number.

28030025555 is a deficient number, since it is larger than the sum of its proper divisors (10411152397).

28030025555 is an equidigital number, since it uses as much as digits as its factorization.

28030025555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800857885.

The product of its (nonzero) digits is 60000, while the sum is 35.

The spelling of 28030025555 in words is "twenty-eight billion, thirty million, twenty-five thousand, five hundred fifty-five".