16725043697 has 2 divisors, whose sum is σ = 16725043698. Its totient is φ = 16725043696.

The previous prime is 16725043681. The next prime is 16725043823. The reversal of 16725043697 is 79634052761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8933274256 + 7791769441 = 94516^2 + 88271^2 .

It is a cyclic number.

It is not a de Polignac number, because 16725043697 - 2⁴ = 16725043681 is a prime.

It is not a weakly prime, because it can be changed into another prime (16725043637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8362521848 + 8362521849.

It is an arithmetic number, because the mean of its divisors is an integer number (8362521849).

Almost surely, 2^16725043697 is an apocalyptic number.

It is an amenable number.

16725043697 is a deficient number, since it is larger than the sum of its proper divisors (1).

16725043697 is an equidigital number, since it uses as much as digits as its factorization.

16725043697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1905120, while the sum is 50.

The spelling of 16725043697 in words is "sixteen billion, seven hundred twenty-five million, forty-three thousand, six hundred ninety-seven".