6857855625 has 20 divisors (see below), whose sum is σ = 11426104976. Its totient is φ = 3657522000.

The previous prime is 6857855623. The next prime is 6857855639. The reversal of 6857855625 is 5265587586.

6857855625 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 6857855625 - 2¹ = 6857855623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6857855623) 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 19 ways as a sum of consecutive naturals, for example, 1826887 + ... + 1830636.

Almost surely, 2^6857855625 is an apocalyptic number.

It is an amenable number.

6857855625 is a deficient number, since it is larger than the sum of its proper divisors (4568249351).

6857855625 is an equidigital number, since it uses as much as digits as its factorization.

6857855625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3657546 (or 3657531 counting only the distinct ones).

The product of its digits is 20160000, while the sum is 57.

The square root of 6857855625 is about 82812.1707540625. The cubic root of 6857855625 is about 1899.8943269945.

The spelling of 6857855625 in words is "six billion, eight hundred fifty-seven million, eight hundred fifty-five thousand, six hundred twenty-five".