28251705572227 has 8 divisors (see below), whose sum is σ = 28302676436880. Its totient is φ = 28200737510880.

The previous prime is 28251705572113. The next prime is 28251705572231. The reversal of 28251705572227 is 72227550715282.

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 28251705572227 - 2³¹ = 28249558088579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28251705572927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20025549 + ... + 21389857.

It is an arithmetic number, because the mean of its divisors is an integer number (3537834554610).

Almost surely, 2^{28251705572227} is an apocalyptic number.

28251705572227 is a deficient number, since it is larger than the sum of its proper divisors (50970864653).

28251705572227 is a wasteful number, since it uses less digits than its factorization.

28251705572227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401653.

The product of its (nonzero) digits is 10976000, while the sum is 55.

The spelling of 28251705572227 in words is "twenty-eight trillion, two hundred fifty-one billion, seven hundred five million, five hundred seventy-two thousand, two hundred twenty-seven".