6525009 has 8 divisors (see below), whose sum is σ = 9666720. Its totient is φ = 4349988.

The previous prime is 6525007. The next prime is 6525047. The reversal of 6525009 is 9005256.

6525009 is a `hidden beast` number, since 652 + 5 + 0 + 0 + 9 = 666.

It is not a de Polignac number, because 6525009 - 2¹ = 6525007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 241667 = 6525009 / (6 + 5 + 2 + 5 + 0 + 0 + 9).

6525009 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6525007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120807 + ... + 120860.

It is an arithmetic number, because the mean of its divisors is an integer number (1208340).

Almost surely, 2^6525009 is an apocalyptic number.

It is an amenable number.

6525009 is a deficient number, since it is larger than the sum of its proper divisors (3141711).

6525009 is a wasteful number, since it uses less digits than its factorization.

6525009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241676 (or 241670 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 6525009 is about 2554.4097165490. The cubic root of 6525009 is about 186.8646011969.

The spelling of 6525009 in words is "six million, five hundred twenty-five thousand, nine".