6506725 has 6 divisors (see below), whose sum is σ = 8068370. Its totient is φ = 5205360.

The previous prime is 6506719. The next prime is 6506779. The reversal of 6506725 is 5276056.

It can be written as a sum of positive squares in 3 ways, for example, as 2184484 + 4322241 = 1478^2 + 2079^2 .

It is not a de Polignac number, because 6506725 - 2⁵ = 6506693 is a prime.

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 5 ways as a sum of consecutive naturals, for example, 130110 + ... + 130159.

Almost surely, 2^6506725 is an apocalyptic number.

It is an amenable number.

6506725 is a deficient number, since it is larger than the sum of its proper divisors (1561645).

6506725 is a wasteful number, since it uses less digits than its factorization.

6506725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260279 (or 260274 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 6506725 is about 2550.8282968479. The cubic root of 6506725 is about 186.6898975481.

The spelling of 6506725 in words is "six million, five hundred six thousand, seven hundred twenty-five".