7920625280 has 64 divisors (see below), whose sum is σ = 19292596200. Its totient is φ = 3108458496.

The previous prime is 7920625217. The next prime is 7920625289. The reversal of 7920625280 is 825260297.

It can be written as a sum of positive squares in 4 ways, for example, as 4568678464 + 3351946816 = 67592^2 + 57896^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (7920625289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82835 + ... + 150674.

Almost surely, 2^7920625280 is an apocalyptic number.

It is an amenable number.

7920625280 is an abundant number, since it is smaller than the sum of its proper divisors (11371970920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7920625280 is a wasteful number, since it uses less digits than its factorization.

7920625280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233581 (or 233569 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 7920625280 is about 88997.8948065627. The cubic root of 7920625280 is about 1993.3634424100.

The spelling of 7920625280 in words is "seven billion, nine hundred twenty million, six hundred twenty-five thousand, two hundred eighty".