27256005 has 72 divisors (see below), whose sum is σ = 56339712. Its totient is φ = 12148416.

The previous prime is 27256001. The next prime is 27256007. The reversal of 27256005 is 50065272.

It is not a de Polignac number, because 27256005 - 2² = 27256001 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 27256005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27256001) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 103504 + ... + 103766.

It is an arithmetic number, because the mean of its divisors is an integer number (782496).

Almost surely, 2^27256005 is an apocalyptic number.

It is an amenable number.

27256005 is an abundant number, since it is smaller than the sum of its proper divisors (29083707).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27256005 is a wasteful number, since it uses less digits than its factorization.

27256005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335 (or 325 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 27256005 is about 5220.7283974557. The cubic root of 27256005 is about 300.9451856197.

The spelling of 27256005 in words is "twenty-seven million, two hundred fifty-six thousand, five".