66325256 has 8 divisors (see below), whose sum is σ = 124359870. Its totient is φ = 33162624.

The previous prime is 66325253. The next prime is 66325267. The reversal of 66325256 is 65252366.

It can be written as a sum of positive squares in only one way, i.e., 64802500 + 1522756 = 8050^2 + 1234^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (66325253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4145321 + ... + 4145336.

Almost surely, 2^66325256 is an apocalyptic number.

It is an amenable number.

66325256 is a deficient number, since it is larger than the sum of its proper divisors (58034614).

66325256 is a wasteful number, since it uses less digits than its factorization.

66325256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8290663 (or 8290659 counting only the distinct ones).

The product of its digits is 64800, while the sum is 35.

The square root of 66325256 is about 8144.0319252812. The cubic root of 66325256 is about 404.7867718706.

The spelling of 66325256 in words is "sixty-six million, three hundred twenty-five thousand, two hundred fifty-six".