6665525 has 12 divisors (see below), whose sum is σ = 8407200. Its totient is φ = 5240880.

The previous prime is 6665497. The next prime is 6665537. The reversal of 6665525 is 5255666.

It is not a de Polignac number, because 6665525 - 2¹⁰ = 6664501 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 (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 785 + ... + 3734.

It is an arithmetic number, because the mean of its divisors is an integer number (700600).

Almost surely, 2^6665525 is an apocalyptic number.

It is an amenable number.

6665525 is a deficient number, since it is larger than the sum of its proper divisors (1741675).

6665525 is a wasteful number, since it uses less digits than its factorization.

6665525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4588 (or 4583 counting only the distinct ones).

The product of its digits is 54000, while the sum is 35.

The square root of 6665525 is about 2581.7678052063. The cubic root of 6665525 is about 188.1964616682.

The spelling of 6665525 in words is "six million, six hundred sixty-five thousand, five hundred twenty-five".