14425781 has 2 divisors, whose sum is σ = 14425782. Its totient is φ = 14425780.

The previous prime is 14425777. The next prime is 14425783. The reversal of 14425781 is 18752441.

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., 13942756 + 483025 = 3734^2 + 695^2 .

It is an emirp because it is prime and its reverse (18752441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 14425781 - 2² = 14425777 is a prime.

It is a super-2 number, since 2×14425781² = 416206314919922, which contains 22 as substring.

Together with 14425783, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14425783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7212890 + 7212891.

It is an arithmetic number, because the mean of its divisors is an integer number (7212891).

Almost surely, 2^14425781 is an apocalyptic number.

It is an amenable number.

14425781 is a deficient number, since it is larger than the sum of its proper divisors (1).

14425781 is an equidigital number, since it uses as much as digits as its factorization.

14425781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8960, while the sum is 32.

The square root of 14425781 is about 3798.1286181487. The cubic root of 14425781 is about 243.4331833081.

The spelling of 14425781 in words is "fourteen million, four hundred twenty-five thousand, seven hundred eighty-one".