25943441 has 2 divisors, whose sum is σ = 25943442. Its totient is φ = 25943440.

The previous prime is 25943413. The next prime is 25943453. The reversal of 25943441 is 14434952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19989841 + 5953600 = 4471^2 + 2440^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25943441 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25943398 and 25943407.

It is not a weakly prime, because it can be changed into another prime (25943641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12971720 + 12971721.

It is an arithmetic number, because the mean of its divisors is an integer number (12971721).

Almost surely, 2^25943441 is an apocalyptic number.

It is an amenable number.

25943441 is a deficient number, since it is larger than the sum of its proper divisors (1).

25943441 is an equidigital number, since it uses as much as digits as its factorization.

25943441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 32.

The square root of 25943441 is about 5093.4704279106. The cubic root of 25943441 is about 296.0346357388.

The spelling of 25943441 in words is "twenty-five million, nine hundred forty-three thousand, four hundred forty-one".