27525165013 has 4 divisors (see below), whose sum is σ = 27834436620. Its totient is φ = 27215893408.

The previous prime is 27525165007. The next prime is 27525165029. The reversal of 27525165013 is 31056152572.

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 8870249124 + 18654915889 = 94182^2 + 136583^2 .

It is a cyclic number.

It is not a de Polignac number, because 27525165013 - 2⁹ = 27525164501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27525162013) 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, 154635670 + ... + 154635847.

It is an arithmetic number, because the mean of its divisors is an integer number (6958609155).

Almost surely, 2^27525165013 is an apocalyptic number.

It is an amenable number.

27525165013 is a deficient number, since it is larger than the sum of its proper divisors (309271607).

27525165013 is an equidigital number, since it uses as much as digits as its factorization.

27525165013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309271606.

The product of its (nonzero) digits is 63000, while the sum is 37.

The spelling of 27525165013 in words is "twenty-seven billion, five hundred twenty-five million, one hundred sixty-five thousand, thirteen".