28052750025 has 36 divisors (see below), whose sum is σ = 50690289468. Its totient is φ = 14829050880.

The previous prime is 28052749999. The next prime is 28052750027. The reversal of 28052750025 is 52005725082.

28052750025 is a `hidden beast` number, since 2 + 80 + 52 + 7 + 500 + 25 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 3799982736 + 24252767289 = 61644^2 + 155733^2 .

It is not a de Polignac number, because 28052750025 - 2⁵ = 28052749993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28052750027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 526252 + ... + 577101.

Almost surely, 2^28052750025 is an apocalyptic number.

28052750025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28052750025 is a deficient number, since it is larger than the sum of its proper divisors (22637539443).

28052750025 is a wasteful number, since it uses less digits than its factorization.

28052750025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103482 (or 1103474 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 36.

The spelling of 28052750025 in words is "twenty-eight billion, fifty-two million, seven hundred fifty thousand, twenty-five".