27081425065 has 8 divisors (see below), whose sum is σ = 32504931720. Its totient is φ = 21660325632.

The previous prime is 27081425029. The next prime is 27081425081. The reversal of 27081425065 is 56052418072.

It can be written as a sum of positive squares in 4 ways, for example, as 3114979344 + 23966445721 = 55812^2 + 154811^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27081425065 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 576960 + ... + 622129.

It is an arithmetic number, because the mean of its divisors is an integer number (4063116465).

Almost surely, 2^27081425065 is an apocalyptic number.

It is an amenable number.

27081425065 is a deficient number, since it is larger than the sum of its proper divisors (5423506655).

27081425065 is a wasteful number, since it uses less digits than its factorization.

27081425065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203611.

The product of its (nonzero) digits is 134400, while the sum is 40.

The spelling of 27081425065 in words is "twenty-seven billion, eighty-one million, four hundred twenty-five thousand, sixty-five".