25997441 has 4 divisors (see below), whose sum is σ = 26109252. Its totient is φ = 25885632.

The previous prime is 25997357. The next prime is 25997443. The reversal of 25997441 is 14479952.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6105841 + 19891600 = 2471^2 + 4460^2 .

It is a cyclic number.

It is not a de Polignac number, because 25997441 - 2¹⁴ = 25981057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25997443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55556 + ... + 56021.

It is an arithmetic number, because the mean of its divisors is an integer number (6527313).

Almost surely, 2^25997441 is an apocalyptic number.

It is an amenable number.

25997441 is a deficient number, since it is larger than the sum of its proper divisors (111811).

25997441 is a wasteful number, since it uses less digits than its factorization.

25997441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111810.

The product of its digits is 90720, while the sum is 41.

The square root of 25997441 is about 5098.7685768232. The cubic root of 25997441 is about 296.2398872559.

The spelling of 25997441 in words is "twenty-five million, nine hundred ninety-seven thousand, four hundred forty-one".