27800050025 has 24 divisors (see below), whose sum is σ = 38222398848. Its totient is φ = 19886760000.

The previous prime is 27800050007. The next prime is 27800050027. The reversal of 27800050025 is 52005000872.

It is not a de Polignac number, because 27800050025 - 2²⁰ = 27799001449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27800050025.

It is not an unprimeable number, because it can be changed into a prime (27800050027) 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, 811841 + ... + 845390.

It is an arithmetic number, because the mean of its divisors is an integer number (1592599952).

Almost surely, 2^27800050025 is an apocalyptic number.

27800050025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27800050025 is a deficient number, since it is larger than the sum of its proper divisors (10422348823).

27800050025 is a wasteful number, since it uses less digits than its factorization.

27800050025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1657313 (or 1657308 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 29.

Adding to 27800050025 its reverse (52005000872), we get a palindrome (79805050897).

The spelling of 27800050025 in words is "twenty-seven billion, eight hundred million, fifty thousand, twenty-five".