6665125 has 16 divisors (see below), whose sum is σ = 8446464. Its totient is φ = 5250000.

The previous prime is 6665123. The next prime is 6665159. The reversal of 6665125 is 5215666.

It is not a de Polignac number, because 6665125 - 2¹ = 6665123 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6665123) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 8500 + ... + 9250.

It is an arithmetic number, because the mean of its divisors is an integer number (527904).

Almost surely, 2^6665125 is an apocalyptic number.

It is an amenable number.

6665125 is a deficient number, since it is larger than the sum of its proper divisors (1781339).

6665125 is an equidigital number, since it uses as much as digits as its factorization.

6665125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837 (or 827 counting only the distinct ones).

The product of its digits is 10800, while the sum is 31.

The square root of 6665125 is about 2581.6903377439. The cubic root of 6665125 is about 188.1926970190.

The spelling of 6665125 in words is "six million, six hundred sixty-five thousand, one hundred twenty-five".