25894613 has 2 divisors, whose sum is σ = 25894614. Its totient is φ = 25894612.

The previous prime is 25894597. The next prime is 25894637. The reversal of 25894613 is 31649852.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18722929 + 7171684 = 4327^2 + 2678^2 .

It is a cyclic number.

It is not a de Polignac number, because 25894613 - 2⁴ = 25894597 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25894513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12947306 + 12947307.

It is an arithmetic number, because the mean of its divisors is an integer number (12947307).

Almost surely, 2^25894613 is an apocalyptic number.

It is an amenable number.

25894613 is a deficient number, since it is larger than the sum of its proper divisors (1).

25894613 is an equidigital number, since it uses as much as digits as its factorization.

25894613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 38.

The square root of 25894613 is about 5088.6749748830. The cubic root of 25894613 is about 295.8487974107.

The spelling of 25894613 in words is "twenty-five million, eight hundred ninety-four thousand, six hundred thirteen".