16725043717 has 8 divisors (see below), whose sum is σ = 17726031576. Its totient is φ = 15725962752.

The previous prime is 16725043697. The next prime is 16725043823. The reversal of 16725043717 is 71734052761.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14176712356 + 2548331361 = 119066^2 + 50481^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16725043717 - 2²⁷ = 16590825989 is a prime.

It is a super-2 number, since 2×16725043717² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16725043217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 458638 + ... + 493759.

It is an arithmetic number, because the mean of its divisors is an integer number (2215753947).

Almost surely, 2^16725043717 is an apocalyptic number.

16725043717 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

16725043717 is a deficient number, since it is larger than the sum of its proper divisors (1000987859).

16725043717 is a wasteful number, since it uses less digits than its factorization.

16725043717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953447.

The product of its (nonzero) digits is 246960, while the sum is 43.

The spelling of 16725043717 in words is "sixteen billion, seven hundred twenty-five million, forty-three thousand, seven hundred seventeen".