66427625 has 16 divisors (see below), whose sum is σ = 90440064. Its totient is φ = 48310000.

The previous prime is 66427609. The next prime is 66427631. The reversal of 66427625 is 52672466.

It is not a de Polignac number, because 66427625 - 2⁴ = 66427609 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22781 + ... + 25530.

It is an arithmetic number, because the mean of its divisors is an integer number (5652504).

Almost surely, 2^66427625 is an apocalyptic number.

It is an amenable number.

66427625 is a deficient number, since it is larger than the sum of its proper divisors (24012439).

66427625 is a wasteful number, since it uses less digits than its factorization.

66427625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48337 (or 48327 counting only the distinct ones).

The product of its digits is 120960, while the sum is 38.

The square root of 66427625 is about 8150.3144111132. The cubic root of 66427625 is about 404.9949194099.

The spelling of 66427625 in words is "sixty-six million, four hundred twenty-seven thousand, six hundred twenty-five".