7982840825 has 6 divisors (see below), whose sum is σ = 9898722654. Its totient is φ = 6386272640.

The previous prime is 7982840821. The next prime is 7982840839. The reversal of 7982840825 is 5280482897.

It can be written as a sum of positive squares in 3 ways, for example, as 599907049 + 7382933776 = 24493^2 + 85924^2 .

It is not a de Polignac number, because 7982840825 - 2² = 7982840821 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7982840821) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 159656792 + ... + 159656841.

It is an arithmetic number, because the mean of its divisors is an integer number (1649787109).

Almost surely, 2^7982840825 is an apocalyptic number.

It is an amenable number.

7982840825 is a deficient number, since it is larger than the sum of its proper divisors (1915881829).

7982840825 is a wasteful number, since it uses less digits than its factorization.

7982840825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319313643 (or 319313638 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 53.

The square root of 7982840825 is about 89346.7449043333. The cubic root of 7982840825 is about 1998.5690451783.

The spelling of 7982840825 in words is "seven billion, nine hundred eighty-two million, eight hundred forty thousand, eight hundred twenty-five".