6662725 has 24 divisors (see below), whose sum is σ = 8925768. Its totient is φ = 4915200.

The previous prime is 6662723. The next prime is 6662741. The reversal of 6662725 is 5272666.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 820836 + 5841889 = 906^2 + 2417^2 .

It is not a de Polignac number, because 6662725 - 2¹ = 6662723 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6662723) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 25797 + ... + 26053.

It is an arithmetic number, because the mean of its divisors is an integer number (371907).

Almost surely, 2^6662725 is an apocalyptic number.

It is an amenable number.

6662725 is a deficient number, since it is larger than the sum of its proper divisors (2263043).

6662725 is a wasteful number, since it uses less digits than its factorization.

6662725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345 (or 340 counting only the distinct ones).

The product of its digits is 30240, while the sum is 34.

The square root of 6662725 is about 2581.2254841451. The cubic root of 6662725 is about 188.1701059600.

The spelling of 6662725 in words is "six million, six hundred sixty-two thousand, seven hundred twenty-five".