27251006005 has 4 divisors (see below), whose sum is σ = 32701207212. Its totient is φ = 21800804800.

The previous prime is 27251005973. The next prime is 27251006009. The reversal of 27251006005 is 50060015272.

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 14848397316 + 12402608689 = 121854^2 + 111367^2 .

It is not a de Polignac number, because 27251006005 - 2⁵ = 27251005973 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 (27251006009) 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, 2725100596 + ... + 2725100605.

It is an arithmetic number, because the mean of its divisors is an integer number (8175301803).

Almost surely, 2^27251006005 is an apocalyptic number.

It is an amenable number.

27251006005 is a deficient number, since it is larger than the sum of its proper divisors (5450201207).

27251006005 is an equidigital number, since it uses as much as digits as its factorization.

27251006005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5450201206.

The product of its (nonzero) digits is 4200, while the sum is 28.

The spelling of 27251006005 in words is "twenty-seven billion, two hundred fifty-one million, six thousand, five".