28282807825 has 12 divisors (see below), whose sum is σ = 35083333888. Its totient is φ = 22618083600.

The previous prime is 28282807793. The next prime is 28282807837. The reversal of 28282807825 is 52870828282.

It is not a de Polignac number, because 28282807825 - 2⁵ = 28282807793 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132897 + ... + 272446.

Almost surely, 2^28282807825 is an apocalyptic number.

28282807825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28282807825 is a deficient number, since it is larger than the sum of its proper divisors (6800526063).

28282807825 is a wasteful number, since it uses less digits than its factorization.

28282807825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408144 (or 408139 counting only the distinct ones).

The product of its (nonzero) digits is 2293760, while the sum is 52.

The spelling of 28282807825 in words is "twenty-eight billion, two hundred eighty-two million, eight hundred seven thousand, eight hundred twenty-five".