16663287025 has 24 divisors (see below), whose sum is σ = 25761011904. Its totient is φ = 10387502400.

The previous prime is 16663287023. The next prime is 16663287041. The reversal of 16663287025 is 52078236661.

It is not a de Polignac number, because 16663287025 - 2¹ = 16663287023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16663287023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4326202 + ... + 4330051.

It is an arithmetic number, because the mean of its divisors is an integer number (1073375496).

Almost surely, 2^16663287025 is an apocalyptic number.

It is an amenable number.

16663287025 is a deficient number, since it is larger than the sum of its proper divisors (9097724879).

16663287025 is a wasteful number, since it uses less digits than its factorization.

16663287025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8656281 (or 8656276 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 46.

The spelling of 16663287025 in words is "sixteen billion, six hundred sixty-three million, two hundred eighty-seven thousand, twenty-five".