16725689551 has 2 divisors, whose sum is σ = 16725689552. Its totient is φ = 16725689550.

The previous prime is 16725689543. The next prime is 16725689557. The reversal of 16725689551 is 15598652761.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16725689551 - 2³ = 16725689543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16725689492 and 16725689501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16725689557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8362844775 + 8362844776.

It is an arithmetic number, because the mean of its divisors is an integer number (8362844776).

Almost surely, 2^16725689551 is an apocalyptic number.

16725689551 is a deficient number, since it is larger than the sum of its proper divisors (1).

16725689551 is an equidigital number, since it uses as much as digits as its factorization.

16725689551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536000, while the sum is 55.

The spelling of 16725689551 in words is "sixteen billion, seven hundred twenty-five million, six hundred eighty-nine thousand, five hundred fifty-one".