16725346817 has 2 divisors, whose sum is σ = 16725346818. Its totient is φ = 16725346816.

The previous prime is 16725346741. The next prime is 16725346843. The reversal of 16725346817 is 71864352761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10643842561 + 6081504256 = 103169^2 + 77984^2 .

It is a cyclic number.

It is not a de Polignac number, because 16725346817 - 2¹⁶ = 16725281281 is a prime.

It is a super-2 number, since 2×16725346817² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16725346867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8362673408 + 8362673409.

It is an arithmetic number, because the mean of its divisors is an integer number (8362673409).

Almost surely, 2^16725346817 is an apocalyptic number.

It is an amenable number.

16725346817 is a deficient number, since it is larger than the sum of its proper divisors (1).

16725346817 is an equidigital number, since it uses as much as digits as its factorization.

16725346817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1693440, while the sum is 50.

The spelling of 16725346817 in words is "sixteen billion, seven hundred twenty-five million, three hundred forty-six thousand, eight hundred seventeen".