16225999 has 2 divisors, whose sum is σ = 16226000. Its totient is φ = 16225998.

The previous prime is 16225991. The next prime is 16226027. The reversal of 16225999 is 99952261.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (99952261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16225999 - 2³ = 16225991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16225991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8112999 + 8113000.

It is an arithmetic number, because the mean of its divisors is an integer number (8113000).

Almost surely, 2^16225999 is an apocalyptic number.

16225999 is a deficient number, since it is larger than the sum of its proper divisors (1).

16225999 is an equidigital number, since it uses as much as digits as its factorization.

16225999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87480, while the sum is 43.

The square root of 16225999 is about 4028.1508164417. The cubic root of 16225999 is about 253.1650877727.

The spelling of 16225999 in words is "sixteen million, two hundred twenty-five thousand, nine hundred ninety-nine".