28966108025 has 6 divisors (see below), whose sum is σ = 35917973982. Its totient is φ = 23172886400.

The previous prime is 28966108013. The next prime is 28966108079. The reversal of 28966108025 is 52080166982.

It can be written as a sum of positive squares in 3 ways, for example, as 7717798201 + 21248309824 = 87851^2 + 145768^2 .

It is not a de Polignac number, because 28966108025 - 2⁴ = 28966108009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 579322136 + ... + 579322185.

It is an arithmetic number, because the mean of its divisors is an integer number (5986328997).

Almost surely, 2^28966108025 is an apocalyptic number.

28966108025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28966108025 is a deficient number, since it is larger than the sum of its proper divisors (6951865957).

28966108025 is a wasteful number, since it uses less digits than its factorization.

28966108025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158644331 (or 1158644326 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 47.

The spelling of 28966108025 in words is "twenty-eight billion, nine hundred sixty-six million, one hundred eight thousand, twenty-five".