66725010 has 48 divisors (see below), whose sum is σ = 189259200. Its totient is φ = 16175520.

The previous prime is 66725003. The next prime is 66725041. The reversal of 66725010 is 1052766.

66725010 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon 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 23 ways as a sum of consecutive naturals, for example, 32710 + ... + 34689.

It is an arithmetic number, because the mean of its divisors is an integer number (3942900).

Almost surely, 2^66725010 is an apocalyptic number.

66725010 is an abundant number, since it is smaller than the sum of its proper divisors (122534190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66725010 is a wasteful number, since it uses less digits than its factorization.

66725010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67423 (or 67420 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 66725010 is about 8168.5378128524. The cubic root of 66725010 is about 405.5983838620.

Adding to 66725010 its reverse (1052766), we get a palindrome (67777776).

The spelling of 66725010 in words is "sixty-six million, seven hundred twenty-five thousand, ten".