27582505505 has 4 divisors (see below), whose sum is σ = 33099006612. Its totient is φ = 22066004400.

The previous prime is 27582505501. The next prime is 27582505619. The reversal of 27582505505 is 50550528572.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5098102801 + 22484402704 = 71401^2 + 149948^2 .

It is not a de Polignac number, because 27582505505 - 2² = 27582505501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27582505501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2758250546 + ... + 2758250555.

It is an arithmetic number, because the mean of its divisors is an integer number (8274751653).

Almost surely, 2^27582505505 is an apocalyptic number.

It is an amenable number.

27582505505 is a deficient number, since it is larger than the sum of its proper divisors (5516501107).

27582505505 is an equidigital number, since it uses as much as digits as its factorization.

27582505505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5516501106.

The product of its (nonzero) digits is 700000, while the sum is 44.

The spelling of 27582505505 in words is "twenty-seven billion, five hundred eighty-two million, five hundred five thousand, five hundred five".