6856925 has 6 divisors (see below), whose sum is σ = 8502618. Its totient is φ = 5485520.

The previous prime is 6856919. The next prime is 6856931. The reversal of 6856925 is 5296586.

6856925 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (6856919) and next prime (6856931).

It can be written as a sum of positive squares in 3 ways, for example, as 195364 + 6661561 = 442^2 + 2581^2 .

It is not a de Polignac number, because 6856925 - 2⁸ = 6856669 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 137114 + ... + 137163.

It is an arithmetic number, because the mean of its divisors is an integer number (1417103).

Almost surely, 2^6856925 is an apocalyptic number.

It is an amenable number.

6856925 is a deficient number, since it is larger than the sum of its proper divisors (1645693).

6856925 is a wasteful number, since it uses less digits than its factorization.

6856925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274287 (or 274282 counting only the distinct ones).

The product of its digits is 129600, while the sum is 41.

The square root of 6856925 is about 2618.5730847162. The cubic root of 6856925 is about 189.9808383261.

The spelling of 6856925 in words is "six million, eight hundred fifty-six thousand, nine hundred twenty-five".