27825057529 has 4 divisors (see below), whose sum is σ = 27826329076. Its totient is φ = 27823785984.

The previous prime is 27825057527. The next prime is 27825057539. The reversal of 27825057529 is 92575052872.

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 10925057529 + 16900000000 = 104523^2 + 130000^2 .

It is a cyclic number.

It is not a de Polignac number, because 27825057529 - 2¹ = 27825057527 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27825057521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 602364 + ... + 646909.

It is an arithmetic number, because the mean of its divisors is an integer number (6956582269).

Almost surely, 2^27825057529 is an apocalyptic number.

It is an amenable number.

27825057529 is a deficient number, since it is larger than the sum of its proper divisors (1271547).

27825057529 is a wasteful number, since it uses less digits than its factorization.

27825057529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271546.

The product of its (nonzero) digits is 3528000, while the sum is 52.

The spelling of 27825057529 in words is "twenty-seven billion, eight hundred twenty-five million, fifty-seven thousand, five hundred twenty-nine".