7985989225 has 24 divisors (see below), whose sum is σ = 10151537760. Its totient is φ = 6228432000.

The previous prime is 7985989213. The next prime is 7985989243. The reversal of 7985989225 is 5229895897.

It is a happy number.

7985989225 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7985989225 - 2⁷ = 7985989097 is a prime.

It is a super-2 number, since 2×7985989225² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 2395810 + ... + 2399140.

It is an arithmetic number, because the mean of its divisors is an integer number (422980740).

Almost surely, 2^7985989225 is an apocalyptic number.

It is an amenable number.

7985989225 is a deficient number, since it is larger than the sum of its proper divisors (2165548535).

7985989225 is a wasteful number, since it uses less digits than its factorization.

7985989225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5721 (or 5716 counting only the distinct ones).

The product of its digits is 32659200, while the sum is 64.

The square root of 7985989225 is about 89364.3621641200. The cubic root of 7985989225 is about 1998.8317531492.

The spelling of 7985989225 in words is "seven billion, nine hundred eighty-five million, nine hundred eighty-nine thousand, two hundred twenty-five".