66412425 has 24 divisors (see below), whose sum is σ = 112360864. Its totient is φ = 34594560.

The previous prime is 66412397. The next prime is 66412433. The reversal of 66412425 is 52421466.

It is not a de Polignac number, because 66412425 - 2¹⁷ = 66281353 is a prime.

It is a super-2 number, since 2×66412425² = 8821220388761250, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 66412392 and 66412401.

It is an unprimeable number.

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, 7072 + ... + 13521.

Almost surely, 2^66412425 is an apocalyptic number.

It is an amenable number.

66412425 is a deficient number, since it is larger than the sum of its proper divisors (45948439).

66412425 is a wasteful number, since it uses less digits than its factorization.

66412425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20649 (or 20644 counting only the distinct ones).

The product of its digits is 11520, while the sum is 30.

The square root of 66412425 is about 8149.3818784003. The cubic root of 66412425 is about 404.9640266783.

The spelling of 66412425 in words is "sixty-six million, four hundred twelve thousand, four hundred twenty-five".