16663286425 has 24 divisors (see below), whose sum is σ = 22056356160. Its totient is φ = 12451118400.

The previous prime is 16663286411. The next prime is 16663286429. The reversal of 16663286425 is 52468236661.

16663286425 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 16663286425 - 2²¹ = 16661189273 is a prime.

It is a super-2 number, since 2×16663286425² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16663286429) 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, 213322 + ... + 280771.

It is an arithmetic number, because the mean of its divisors is an integer number (919014840).

Almost surely, 2^16663286425 is an apocalyptic number.

It is an amenable number.

16663286425 is a deficient number, since it is larger than the sum of its proper divisors (5393069735).

16663286425 is a wasteful number, since it uses less digits than its factorization.

16663286425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494193 (or 494188 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 49.

The spelling of 16663286425 in words is "sixteen billion, six hundred sixty-three million, two hundred eighty-six thousand, four hundred twenty-five".