16725014521 has 2 divisors, whose sum is σ = 16725014522. Its totient is φ = 16725014520.

The previous prime is 16725014497. The next prime is 16725014533. The reversal of 16725014521 is 12541052761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9189906496 + 7535108025 = 95864^2 + 86805^2 .

It is a cyclic number.

It is not a de Polignac number, because 16725014521 - 2²⁵ = 16691460089 is a prime.

It is a super-2 number, since 2×16725014521² (a number of 21 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (16725014921) by changing a digit.

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 as a sum of consecutive naturals, namely, 8362507260 + 8362507261.

It is an arithmetic number, because the mean of its divisors is an integer number (8362507261).

Almost surely, 2^16725014521 is an apocalyptic number.

It is an amenable number.

16725014521 is a deficient number, since it is larger than the sum of its proper divisors (1).

16725014521 is an equidigital number, since it uses as much as digits as its factorization.

16725014521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16800, while the sum is 34.

The spelling of 16725014521 in words is "sixteen billion, seven hundred twenty-five million, fourteen thousand, five hundred twenty-one".