6389825 has 12 divisors (see below), whose sum is σ = 8533308. Its totient is φ = 4718400.

The previous prime is 6389821. The next prime is 6389849. The reversal of 6389825 is 5289836.

It can be written as a sum of positive squares in 6 ways, for example, as 591361 + 5798464 = 769^2 + 2408^2 .

It is not a de Polignac number, because 6389825 - 2² = 6389821 is a prime.

It is a d-powerful number, because it can be written as 6⁷ + 3¹³ + 8² + 9⁵ + 8⁶ + 2²² + 5 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6389821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9506 + ... + 10155.

It is an arithmetic number, because the mean of its divisors is an integer number (711109).

Almost surely, 2^6389825 is an apocalyptic number.

6389825 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6389825 is a deficient number, since it is larger than the sum of its proper divisors (2143483).

6389825 is a wasteful number, since it uses less digits than its factorization.

6389825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19684 (or 19679 counting only the distinct ones).

The product of its digits is 103680, while the sum is 41.

The square root of 6389825 is about 2527.8103172509. The cubic root of 6389825 is about 185.5651091425.

The spelling of 6389825 in words is "six million, three hundred eighty-nine thousand, eight hundred twenty-five".