27851118725 has 12 divisors (see below), whose sum is σ = 34537473984. Its totient is φ = 22279548720.

The previous prime is 27851118709. The next prime is 27851118749. The reversal of 27851118725 is 52781115872.

It is not a de Polignac number, because 27851118725 - 2⁴ = 27851118709 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27851118725.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 714182 + ... + 752168.

It is an arithmetic number, because the mean of its divisors is an integer number (2878122832).

Almost surely, 2^27851118725 is an apocalyptic number.

27851118725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27851118725 is a deficient number, since it is larger than the sum of its proper divisors (6686355259).

27851118725 is a wasteful number, since it uses less digits than its factorization.

27851118725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67324 (or 67319 counting only the distinct ones).

The product of its digits is 313600, while the sum is 47.

The spelling of 27851118725 in words is "twenty-seven billion, eight hundred fifty-one million, one hundred eighteen thousand, seven hundred twenty-five".