28080223425 has 42 divisors (see below), whose sum is σ = 52205367782. Its totient is φ = 14976109440.

The previous prime is 28080223403. The next prime is 28080223439. The reversal of 28080223425 is 52432208082.

28080223425 is a `hidden beast` number, since 2 + 8 + 0 + 8 + 0 + 223 + 425 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 30338064 + 28049885361 = 5508^2 + 167481^2 .

It is not a de Polignac number, because 28080223425 - 2⁶ = 28080223361 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28080223425.

It is an unprimeable number.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 752152 + ... + 788601.

Almost surely, 2^28080223425 is an apocalyptic number.

28080223425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28080223425 is a deficient number, since it is larger than the sum of its proper divisors (24125144357).

28080223425 is an equidigital number, since it uses as much as digits as its factorization.

28080223425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540781 (or 1540761 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

The spelling of 28080223425 in words is "twenty-eight billion, eighty million, two hundred twenty-three thousand, four hundred twenty-five".