66323425 has 24 divisors (see below), whose sum is σ = 96539456. Its totient is φ = 44245440.

The previous prime is 66323417. The next prime is 66323461. The reversal of 66323425 is 52432366.

It is a happy number.

66323425 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 66323425 - 2³ = 66323417 is a prime.

It is a Duffinian 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, 1354 + ... + 11596.

Almost surely, 2^66323425 is an apocalyptic number.

It is an amenable number.

66323425 is a deficient number, since it is larger than the sum of its proper divisors (30216031).

66323425 is a wasteful number, since it uses less digits than its factorization.

66323425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10297 (or 10292 counting only the distinct ones).

The product of its digits is 25920, while the sum is 31.

The square root of 66323425 is about 8143.9195108989. The cubic root of 66323425 is about 404.7830469376.

The spelling of 66323425 in words is "sixty-six million, three hundred twenty-three thousand, four hundred twenty-five".