7852421875 has 16 divisors (see below), whose sum is σ = 9815599872. Its totient is φ = 6281875000.

The previous prime is 7852421831. The next prime is 7852421887. The reversal of 7852421875 is 5781242587.

It is a happy number.

It is not a de Polignac number, because 7852421875 - 2¹⁵ = 7852389107 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 27870 + ... + 128380.

It is an arithmetic number, because the mean of its divisors is an integer number (613474992).

Almost surely, 2^7852421875 is an apocalyptic number.

7852421875 is a deficient number, since it is larger than the sum of its proper divisors (1963177997).

7852421875 is an frugal number, since it uses more digits than its factorization.

7852421875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100546 (or 100516 counting only the distinct ones).

The product of its digits is 1254400, while the sum is 49.

The square root of 7852421875 is about 88613.8921106617. The cubic root of 7852421875 is about 1987.6254156582.

The spelling of 7852421875 in words is "seven billion, eight hundred fifty-two million, four hundred twenty-one thousand, eight hundred seventy-five".