8479640325 has 48 divisors (see below), whose sum is σ = 15239399616. Its totient is φ = 4135526400.

The previous prime is 8479640297. The next prime is 8479640327. The reversal of 8479640325 is 5230469748.

It is not a de Polignac number, because 8479640325 - 2⁶ = 8479640261 is a prime.

It is a super-2 number, since 2×8479640325² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8479640327) 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 in 47 ways as a sum of consecutive naturals, for example, 63685 + ... + 144965.

It is an arithmetic number, because the mean of its divisors is an integer number (317487492).

Almost surely, 2^8479640325 is an apocalyptic number.

It is an amenable number.

8479640325 is a deficient number, since it is larger than the sum of its proper divisors (6759759291).

8479640325 is a wasteful number, since it uses less digits than its factorization.

8479640325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81414 (or 81409 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 48.

The square root of 8479640325 is about 92084.9625346071. The cubic root of 8479640325 is about 2039.1968135216.

The spelling of 8479640325 in words is "eight billion, four hundred seventy-nine million, six hundred forty thousand, three hundred twenty-five".