27725387 has 2 divisors, whose sum is σ = 27725388. Its totient is φ = 27725386.

The previous prime is 27725381. The next prime is 27725431. The reversal of 27725387 is 78352772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27725387 - 2⁴ = 27725371 is a prime.

It is not a weakly prime, because it can be changed into another prime (27725381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13862693 + 13862694.

It is an arithmetic number, because the mean of its divisors is an integer number (13862694).

Almost surely, 2^27725387 is an apocalyptic number.

27725387 is a deficient number, since it is larger than the sum of its proper divisors (1).

27725387 is an equidigital number, since it uses as much as digits as its factorization.

27725387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 164640, while the sum is 41.

The square root of 27725387 is about 5265.4901956038. The cubic root of 27725387 is about 302.6629115879.

The spelling of 27725387 in words is "twenty-seven million, seven hundred twenty-five thousand, three hundred eighty-seven".