66675125 has 16 divisors (see below), whose sum is σ = 90777024. Its totient is φ = 48490000.

The previous prime is 66675109. The next prime is 66675157. The reversal of 66675125 is 52157666.

It is not a de Polignac number, because 66675125 - 2⁴ = 66675109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22871 + ... + 25620.

It is an arithmetic number, because the mean of its divisors is an integer number (5673564).

Almost surely, 2^66675125 is an apocalyptic number.

It is an amenable number.

66675125 is a deficient number, since it is larger than the sum of its proper divisors (24101899).

66675125 is a wasteful number, since it uses less digits than its factorization.

66675125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48517 (or 48507 counting only the distinct ones).

The product of its digits is 75600, while the sum is 38.

The square root of 66675125 is about 8165.4837578676. The cubic root of 66675125 is about 405.4972807437.

The spelling of 66675125 in words is "sixty-six million, six hundred seventy-five thousand, one hundred twenty-five".