28245225673 has 12 divisors (see below), whose sum is σ = 32860687872. Its totient is φ = 24207248520.

The previous prime is 28245225661. The next prime is 28245225781. The reversal of 28245225673 is 37652254282.

It is a de Polignac number, because none of the positive numbers 2^k-28245225673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28245225973) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 435736 + ... + 496342.

It is an arithmetic number, because the mean of its divisors is an integer number (2738390656).

Almost surely, 2^28245225673 is an apocalyptic number.

It is an amenable number.

28245225673 is a deficient number, since it is larger than the sum of its proper divisors (4615462199).

28245225673 is an equidigital number, since it uses as much as digits as its factorization.

28245225673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70132 (or 70125 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 46.

The spelling of 28245225673 in words is "twenty-eight billion, two hundred forty-five million, two hundred twenty-five thousand, six hundred seventy-three".