6865625 has 24 divisors (see below), whose sum is σ = 9296280. Its totient is φ = 5070000.

The previous prime is 6865613. The next prime is 6865643. The reversal of 6865625 is 5265686.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 12 ways, for example, as 2383936 + 4481689 = 1544^2 + 2117^2 .

It is not a de Polignac number, because 6865625 - 2⁶ = 6865561 is a prime.

Its product of digits (86400) is a multiple of the sum of its prime divisors (18).

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 23 ways as a sum of consecutive naturals, for example, 528119 + ... + 528131.

It is an arithmetic number, because the mean of its divisors is an integer number (387345).

Almost surely, 2^6865625 is an apocalyptic number.

6865625 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6865625 is a deficient number, since it is larger than the sum of its proper divisors (2430655).

6865625 is an frugal number, since it uses more digits than its factorization.

6865625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64 (or 18 counting only the distinct ones).

The product of its digits is 86400, while the sum is 38.

The square root of 6865625 is about 2620.2337681970. The cubic root of 6865625 is about 190.0611529838.

The spelling of 6865625 in words is "six million, eight hundred sixty-five thousand, six hundred twenty-five".