6881725 has 6 divisors (see below), whose sum is σ = 8533370. Its totient is φ = 5505360.

The previous prime is 6881713. The next prime is 6881731. The reversal of 6881725 is 5271886.

It can be written as a sum of positive squares in 3 ways, for example, as 1207801 + 5673924 = 1099^2 + 2382^2 .

It is not a de Polignac number, because 6881725 - 2¹³ = 6873533 is a prime.

6881725 is a lucky 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, 137610 + ... + 137659.

Almost surely, 2^6881725 is an apocalyptic number.

It is an amenable number.

6881725 is a deficient number, since it is larger than the sum of its proper divisors (1651645).

6881725 is a wasteful number, since it uses less digits than its factorization.

6881725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275279 (or 275274 counting only the distinct ones).

The product of its digits is 26880, while the sum is 37.

The square root of 6881725 is about 2623.3042141544. The cubic root of 6881725 is about 190.2096024826.

The spelling of 6881725 in words is "six million, eight hundred eighty-one thousand, seven hundred twenty-five".