25456943 has 2 divisors, whose sum is σ = 25456944. Its totient is φ = 25456942.

The previous prime is 25456933. The next prime is 25456957. The reversal of 25456943 is 34965452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25456943 - 2⁸ = 25456687 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 25456897 and 25456906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25456933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12728471 + 12728472.

It is an arithmetic number, because the mean of its divisors is an integer number (12728472).

Almost surely, 2^25456943 is an apocalyptic number.

25456943 is a deficient number, since it is larger than the sum of its proper divisors (1).

25456943 is an equidigital number, since it uses as much as digits as its factorization.

25456943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129600, while the sum is 38.

The square root of 25456943 is about 5045.4873897375. The cubic root of 25456943 is about 294.1725081655.

The spelling of 25456943 in words is "twenty-five million, four hundred fifty-six thousand, nine hundred forty-three".