25954891 has 2 divisors, whose sum is σ = 25954892. Its totient is φ = 25954890.

The previous prime is 25954889. The next prime is 25954909. The reversal of 25954891 is 19845952.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25954891 - 2¹ = 25954889 is a prime.

Together with 25954889, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25954861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12977445 + 12977446.

It is an arithmetic number, because the mean of its divisors is an integer number (12977446).

Almost surely, 2^25954891 is an apocalyptic number.

25954891 is a deficient number, since it is larger than the sum of its proper divisors (1).

25954891 is an equidigital number, since it uses as much as digits as its factorization.

25954891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129600, while the sum is 43.

The square root of 25954891 is about 5094.5942919922. The cubic root of 25954891 is about 296.0781804385.

The spelling of 25954891 in words is "twenty-five million, nine hundred fifty-four thousand, eight hundred ninety-one".