66266125 has 8 divisors (see below), whose sum is σ = 82700280. Its totient is φ = 53012800.

The previous prime is 66266117. The next prime is 66266141. The reversal of 66266125 is 52166266.

66266125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1028196 + 65237929 = 1014^2 + 8077^2 .

It is not a de Polignac number, because 66266125 - 2³ = 66266117 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 7 ways as a sum of consecutive naturals, for example, 264940 + ... + 265189.

It is an arithmetic number, because the mean of its divisors is an integer number (10337535).

Almost surely, 2^66266125 is an apocalyptic number.

It is an amenable number.

66266125 is a deficient number, since it is larger than the sum of its proper divisors (16434155).

66266125 is an equidigital number, since it uses as much as digits as its factorization.

66266125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530144 (or 530134 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The square root of 66266125 is about 8140.4007886590. The cubic root of 66266125 is about 404.6664428303. Note that the first 3 decimals are identical.

The spelling of 66266125 in words is "sixty-six million, two hundred sixty-six thousand, one hundred twenty-five".