27825554279 has 2 divisors, whose sum is σ = 27825554280. Its totient is φ = 27825554278.

The previous prime is 27825554249. The next prime is 27825554303. The reversal of 27825554279 is 97245552872.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27825554279 - 2⁸ = 27825554023 is a prime.

It is a super-2 number, since 2×27825554279² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27825554209) 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 as a sum of consecutive naturals, namely, 13912777139 + 13912777140.

It is an arithmetic number, because the mean of its divisors is an integer number (13912777140).

Almost surely, 2^27825554279 is an apocalyptic number.

27825554279 is a deficient number, since it is larger than the sum of its proper divisors (1).

27825554279 is an equidigital number, since it uses as much as digits as its factorization.

27825554279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14112000, while the sum is 56.

The spelling of 27825554279 in words is "twenty-seven billion, eight hundred twenty-five million, five hundred fifty-four thousand, two hundred seventy-nine".