27800025505 has 16 divisors (see below), whose sum is σ = 38662735104. Its totient is φ = 18794381760.

The previous prime is 27800025413. The next prime is 27800025511. The reversal of 27800025505 is 50552000872.

It is not a de Polignac number, because 27800025505 - 2¹³ = 27800017313 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5591082 + ... + 5596051.

It is an arithmetic number, because the mean of its divisors is an integer number (2416420944).

Almost surely, 2^27800025505 is an apocalyptic number.

It is an amenable number.

27800025505 is a deficient number, since it is larger than the sum of its proper divisors (10862709599).

27800025505 is a wasteful number, since it uses less digits than its factorization.

27800025505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11187216.

The product of its (nonzero) digits is 28000, while the sum is 34.

The spelling of 27800025505 in words is "twenty-seven billion, eight hundred million, twenty-five thousand, five hundred five".