6781325 has 6 divisors (see below), whose sum is σ = 8408874. Its totient is φ = 5425040.

The previous prime is 6781321. The next prime is 6781337. The reversal of 6781325 is 5231876.

It is a happy number.

6781325 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 299209 + 6482116 = 547^2 + 2546^2 .

It is not a de Polignac number, because 6781325 - 2² = 6781321 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6781291 and 6781300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6781321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 135602 + ... + 135651.

It is an arithmetic number, because the mean of its divisors is an integer number (1401479).

Almost surely, 2^6781325 is an apocalyptic number.

It is an amenable number.

6781325 is a deficient number, since it is larger than the sum of its proper divisors (1627549).

6781325 is a wasteful number, since it uses less digits than its factorization.

6781325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271263 (or 271258 counting only the distinct ones).

The product of its digits is 10080, while the sum is 32.

The square root of 6781325 is about 2604.0977324210. The cubic root of 6781325 is about 189.2800547563.

The spelling of 6781325 in words is "six million, seven hundred eighty-one thousand, three hundred twenty-five".