28288610225 has 12 divisors (see below), whose sum is σ = 36603002496. Its totient is φ = 21646936080.

The previous prime is 28288610219. The next prime is 28288610227. The reversal of 28288610225 is 52201688282.

It is not a de Polignac number, because 28288610225 - 2⁴ = 28288610209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28288610227) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 24598217 + ... + 24599366.

It is an arithmetic number, because the mean of its divisors is an integer number (3050250208).

Almost surely, 2^28288610225 is an apocalyptic number.

28288610225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28288610225 is a deficient number, since it is larger than the sum of its proper divisors (8314392271).

28288610225 is a wasteful number, since it uses less digits than its factorization.

28288610225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49197616 (or 49197611 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 44.

The spelling of 28288610225 in words is "twenty-eight billion, two hundred eighty-eight million, six hundred ten thousand, two hundred twenty-five".