6389725 has 6 divisors (see below), whose sum is σ = 7923290. Its totient is φ = 5111760.

The previous prime is 6389717. The next prime is 6389729. The reversal of 6389725 is 5279836.

It can be written as a sum of positive squares in 3 ways, for example, as 29241 + 6360484 = 171^2 + 2522^2 .

It is not a de Polignac number, because 6389725 - 2³ = 6389717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6389729) 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, 127770 + ... + 127819.

Almost surely, 2^6389725 is an apocalyptic number.

It is an amenable number.

6389725 is a deficient number, since it is larger than the sum of its proper divisors (1533565).

6389725 is a wasteful number, since it uses less digits than its factorization.

6389725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255599 (or 255594 counting only the distinct ones).

The product of its digits is 90720, while the sum is 40.

The square root of 6389725 is about 2527.7905372083. The cubic root of 6389725 is about 185.5641411135.

The spelling of 6389725 in words is "six million, three hundred eighty-nine thousand, seven hundred twenty-five".