6840925 has 48 divisors (see below), whose sum is σ = 10888192. Its totient is φ = 4147200.

The previous prime is 6840871. The next prime is 6840929. The reversal of 6840925 is 5290486.

It is a happy number.

It is not a de Polignac number, because 6840925 - 2⁷ = 6840797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6840929) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 70477 + ... + 70573.

Almost surely, 2^6840925 is an apocalyptic number.

6840925 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6840925 is a deficient number, since it is larger than the sum of its proper divisors (4047267).

6840925 is a wasteful number, since it uses less digits than its factorization.

6840925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 153 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 6840925 is about 2615.5162014409. The cubic root of 6840925 is about 189.8329556740.

The spelling of 6840925 in words is "six million, eight hundred forty thousand, nine hundred twenty-five".