28027750025 has 24 divisors (see below), whose sum is σ = 37968248448. Its totient is φ = 20354600000.

The previous prime is 28027750007. The next prime is 28027750027. The reversal of 28027750025 is 52005772082.

It is not a de Polignac number, because 28027750025 - 2²⁶ = 27960641161 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28027750027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 120080 + ... + 265470.

It is an arithmetic number, because the mean of its divisors is an integer number (1582010352).

Almost surely, 2^28027750025 is an apocalyptic number.

28027750025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28027750025 is a deficient number, since it is larger than the sum of its proper divisors (9940498423).

28027750025 is a wasteful number, since it uses less digits than its factorization.

28027750025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146113 (or 146108 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 38.

The spelling of 28027750025 in words is "twenty-eight billion, twenty-seven million, seven hundred fifty thousand, twenty-five".