18680065257825 has 144 divisors (see below), whose sum is σ = 35048006712576. Its totient is φ = 9501248332800.

The previous prime is 18680065257767. The next prime is 18680065257871. The reversal of 18680065257825 is 52875256008681.

It is a happy number.

18680065257825 is a `hidden beast` number, since 1 + 8 + 6 + 8 + 0 + 0 + 6 + 52 + 578 + 2 + 5 = 666.

It is not a de Polignac number, because 18680065257825 - 2⁸ = 18680065257569 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 191390437 + ... + 191488013.

It is an arithmetic number, because the mean of its divisors is an integer number (243388935504).

Almost surely, 2^{18680065257825} is an apocalyptic number.

18680065257825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18680065257825 is a deficient number, since it is larger than the sum of its proper divisors (16367941454751).

18680065257825 is a wasteful number, since it uses less digits than its factorization.

18680065257825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98104 (or 98096 counting only the distinct ones).

The product of its (nonzero) digits is 64512000, while the sum is 63.

The spelling of 18680065257825 in words is "eighteen trillion, six hundred eighty billion, sixty-five million, two hundred fifty-seven thousand, eight hundred twenty-five".