28275325505 has 8 divisors (see below), whose sum is σ = 38777589312. Its totient is φ = 19388794608.

The previous prime is 28275325501. The next prime is 28275325523. The reversal of 28275325505 is 50552357282.

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 28275325505 - 2² = 28275325501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28275325501) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 403933187 + ... + 403933256.

It is an arithmetic number, because the mean of its divisors is an integer number (4847198664).

Almost surely, 2^28275325505 is an apocalyptic number.

It is an amenable number.

28275325505 is a deficient number, since it is larger than the sum of its proper divisors (10502263807).

28275325505 is an equidigital number, since it uses as much as digits as its factorization.

28275325505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807866455.

The product of its (nonzero) digits is 840000, while the sum is 44.

The spelling of 28275325505 in words is "twenty-eight billion, two hundred seventy-five million, three hundred twenty-five thousand, five hundred five".