27725113613 has 4 divisors (see below), whose sum is σ = 27726885600. Its totient is φ = 27723341628.

The previous prime is 27725113597. The next prime is 27725113631. The reversal of 27725113613 is 31631152772.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27725113613 - 2⁴ = 27725113597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27725113643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 862313 + ... + 893886.

It is an arithmetic number, because the mean of its divisors is an integer number (6931721400).

Almost surely, 2^27725113613 is an apocalyptic number.

It is an amenable number.

27725113613 is a deficient number, since it is larger than the sum of its proper divisors (1771987).

27725113613 is a wasteful number, since it uses less digits than its factorization.

27725113613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771986.

The product of its digits is 52920, while the sum is 38.

The spelling of 27725113613 in words is "twenty-seven billion, seven hundred twenty-five million, one hundred thirteen thousand, six hundred thirteen".