66473325 has 24 divisors (see below), whose sum is σ = 122115200. Its totient is φ = 35452080.

The previous prime is 66473321. The next prime is 66473327. The reversal of 66473325 is 52337466.

66473325 is a `hidden beast` number, since 6 + 647 + 3 + 3 + 2 + 5 = 666.

It is not a de Polignac number, because 66473325 - 2² = 66473321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66473325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66473321) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 48565 + ... + 49914.

Almost surely, 2^66473325 is an apocalyptic number.

It is an amenable number.

66473325 is a deficient number, since it is larger than the sum of its proper divisors (55641875).

66473325 is a wasteful number, since it uses less digits than its factorization.

66473325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98498 (or 98487 counting only the distinct ones).

The product of its digits is 90720, while the sum is 36.

The square root of 66473325 is about 8153.1175019130. The cubic root of 66473325 is about 405.0877724716.

The spelling of 66473325 in words is "sixty-six million, four hundred seventy-three thousand, three hundred twenty-five".