16725624997 has 2 divisors, whose sum is σ = 16725624998. Its totient is φ = 16725624996.

The previous prime is 16725624983. The next prime is 16725625099. The reversal of 16725624997 is 79942652761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11837657601 + 4887967396 = 108801^2 + 69914^2 .

It is an emirp because it is prime and its reverse (79942652761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16725624997 - 2¹⁵ = 16725592229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16725624197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8362812498 + 8362812499.

It is an arithmetic number, because the mean of its divisors is an integer number (8362812499).

Almost surely, 2^16725624997 is an apocalyptic number.

It is an amenable number.

16725624997 is a deficient number, since it is larger than the sum of its proper divisors (1).

16725624997 is an equidigital number, since it uses as much as digits as its factorization.

16725624997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11430720, while the sum is 58.

The spelling of 16725624997 in words is "sixteen billion, seven hundred twenty-five million, six hundred twenty-four thousand, nine hundred ninety-seven".