666412425 has 72 divisors (see below), whose sum is σ = 1408243200. Its totient is φ = 294796800.

The previous prime is 666412421. The next prime is 666412429. The reversal of 666412425 is 524214666.

666412425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (666412421) and next prime (666412429).

It is not a de Polignac number, because 666412425 - 2² = 666412421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 666412425.

It is not an unprimeable number, because it can be changed into a prime (666412421) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 42001 + ... + 55649.

Almost surely, 2^666412425 is an apocalyptic number.

It is an amenable number.

666412425 is an abundant number, since it is smaller than the sum of its proper divisors (741830775).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

666412425 is a wasteful number, since it uses less digits than its factorization.

666412425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13703 (or 13695 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 666412425 is about 25814.9651365250. The cubic root of 666412425 is about 873.4694003398.

The spelling of 666412425 in words is "six hundred sixty-six million, four hundred twelve thousand, four hundred twenty-five".