66456125 has 16 divisors (see below), whose sum is σ = 84352320. Its totient is φ = 52258000.

The previous prime is 66456109. The next prime is 66456151. The reversal of 66456125 is 52165466.

It is not a de Polignac number, because 66456125 - 2⁴ = 66456109 is a prime.

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, 2870 + ... + 11880.

It is an arithmetic number, because the mean of its divisors is an integer number (5272020).

Almost surely, 2^66456125 is an apocalyptic number.

It is an amenable number.

66456125 is a deficient number, since it is larger than the sum of its proper divisors (17896195).

66456125 is an equidigital number, since it uses as much as digits as its factorization.

66456125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9085 (or 9075 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 66456125 is about 8152.0626224288. The cubic root of 66456125 is about 405.0528305821.

The spelling of 66456125 in words is "sixty-six million, four hundred fifty-six thousand, one hundred twenty-five".