27825257828 has 6 divisors (see below), whose sum is σ = 48694201206. Its totient is φ = 13912628912.

The previous prime is 27825257827. The next prime is 27825257839. The reversal of 27825257828 is 82875252872.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 16185437284 + 11639820544 = 127222^2 + 107888^2 .

It is not an unprimeable number, because it can be changed into a prime (27825257827) 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 as a sum of consecutive naturals, namely, 3478157225 + ... + 3478157232.

It is an arithmetic number, because the mean of its divisors is an integer number (8115700201).

Almost surely, 2^27825257828 is an apocalyptic number.

It is an amenable number.

27825257828 is a deficient number, since it is larger than the sum of its proper divisors (20868943378).

27825257828 is a wasteful number, since it uses less digits than its factorization.

27825257828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6956314461 (or 6956314459 counting only the distinct ones).

The product of its digits is 10035200, while the sum is 56.

The spelling of 27825257828 in words is "twenty-seven billion, eight hundred twenty-five million, two hundred fifty-seven thousand, eight hundred twenty-eight".