16225931 has 2 divisors, whose sum is σ = 16225932. Its totient is φ = 16225930.

The previous prime is 16225907. The next prime is 16225933. The reversal of 16225931 is 13952261.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16225931 is a prime.

It is a super-2 number, since 2×16225931² = 526561673633522, which contains 22 as substring.

Together with 16225933, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 16225894 and 16225903.

It is not a weakly prime, because it can be changed into another prime (16225933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8112965 + 8112966.

It is an arithmetic number, because the mean of its divisors is an integer number (8112966).

Almost surely, 2^16225931 is an apocalyptic number.

16225931 is a deficient number, since it is larger than the sum of its proper divisors (1).

16225931 is an equidigital number, since it uses as much as digits as its factorization.

16225931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 29.

The square root of 16225931 is about 4028.1423758353. The cubic root of 16225931 is about 253.1647341171.

The spelling of 16225931 in words is "sixteen million, two hundred twenty-five thousand, nine hundred thirty-one".