25793491 has 4 divisors (see below), whose sum is σ = 25810632. Its totient is φ = 25776352.

The previous prime is 25793489. The next prime is 25793497. The reversal of 25793491 is 19439752.

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

It is a cyclic number.

It is not a de Polignac number, because 25793491 - 2¹ = 25793489 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25793497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6070 + ... + 9403.

It is an arithmetic number, because the mean of its divisors is an integer number (6452658).

Almost surely, 2^25793491 is an apocalyptic number.

25793491 is a deficient number, since it is larger than the sum of its proper divisors (17141).

25793491 is a wasteful number, since it uses less digits than its factorization.

25793491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17140.

The product of its digits is 68040, while the sum is 40.

The square root of 25793491 is about 5078.7292702014. The cubic root of 25793491 is about 295.4631850326.

The spelling of 25793491 in words is "twenty-five million, seven hundred ninety-three thousand, four hundred ninety-one".