39666125 has 16 divisors (see below), whose sum is σ = 49760256. Its totient is φ = 31568400.

The previous prime is 39666119. The next prime is 39666127. The reversal of 39666125 is 52166693.

39666125 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 39666125 - 2⁶ = 39666061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39666127) 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 15 ways as a sum of consecutive naturals, for example, 27164 + ... + 28586.

It is an arithmetic number, because the mean of its divisors is an integer number (3110016).

Almost surely, 2^39666125 is an apocalyptic number.

It is an amenable number.

39666125 is a deficient number, since it is larger than the sum of its proper divisors (10094131).

39666125 is a wasteful number, since it uses less digits than its factorization.

39666125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661 (or 1651 counting only the distinct ones).

The product of its digits is 58320, while the sum is 38.

The square root of 39666125 is about 6298.1048736902. The cubic root of 39666125 is about 341.0409991897.

The spelling of 39666125 in words is "thirty-nine million, six hundred sixty-six thousand, one hundred twenty-five".