16256249 has 2 divisors, whose sum is σ = 16256250. Its totient is φ = 16256248.

The previous prime is 16256221. The next prime is 16256257. The reversal of 16256249 is 94265261.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15745024 + 511225 = 3968^2 + 715^2 .

It is an emirp because it is prime and its reverse (94265261) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16256249 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (16256549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8128124 + 8128125.

It is an arithmetic number, because the mean of its divisors is an integer number (8128125).

Almost surely, 2^16256249 is an apocalyptic number.

It is an amenable number.

16256249 is a deficient number, since it is larger than the sum of its proper divisors (1).

16256249 is an equidigital number, since it uses as much as digits as its factorization.

16256249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 35.

The square root of 16256249 is about 4031.9038927038. The cubic root of 16256249 is about 253.3223146562.

The spelling of 16256249 in words is "sixteen million, two hundred fifty-six thousand, two hundred forty-nine".