7728085325 has 24 divisors (see below), whose sum is σ = 9927936000. Its totient is φ = 5961268800.

The previous prime is 7728085297. The next prime is 7728085331. The reversal of 7728085325 is 5235808277.

It is a happy number.

It is not a de Polignac number, because 7728085325 - 2⁸ = 7728085069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7728085325.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 196676 + ... + 232674.

It is an arithmetic number, because the mean of its divisors is an integer number (413664000).

Almost surely, 2^7728085325 is an apocalyptic number.

It is an amenable number.

7728085325 is a deficient number, since it is larger than the sum of its proper divisors (2199850675).

7728085325 is a wasteful number, since it uses less digits than its factorization.

7728085325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36317 (or 36312 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 47.

The square root of 7728085325 is about 87909.5292047455. The cubic root of 7728085325 is about 1977.0787555636.

The spelling of 7728085325 in words is "seven billion, seven hundred twenty-eight million, eighty-five thousand, three hundred twenty-five".