66757125 has 32 divisors (see below), whose sum is σ = 112784256. Its totient is φ = 35059200.

The previous prime is 66757099. The next prime is 66757129. The reversal of 66757125 is 52175766.

66757125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66757125 - 2²³ = 58368517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66757129) 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 31 ways as a sum of consecutive naturals, for example, 23797 + ... + 26453.

It is an arithmetic number, because the mean of its divisors is an integer number (3524508).

Almost surely, 2^66757125 is an apocalyptic number.

It is an amenable number.

66757125 is a deficient number, since it is larger than the sum of its proper divisors (46027131).

66757125 is a wasteful number, since it uses less digits than its factorization.

66757125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2742 (or 2732 counting only the distinct ones).

The product of its digits is 88200, while the sum is 39.

The square root of 66757125 is about 8170.5033504675. The cubic root of 66757125 is about 405.6634454377.

The spelling of 66757125 in words is "sixty-six million, seven hundred fifty-seven thousand, one hundred twenty-five".