25993291 has 8 divisors (see below), whose sum is σ = 26508800. Its totient is φ = 25482600.

The previous prime is 25993249. The next prime is 25993321. The reversal of 25993291 is 19239952.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25993291 - 2¹⁵ = 25960523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25993241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10840 + ... + 13018.

It is an arithmetic number, because the mean of its divisors is an integer number (3313600).

Almost surely, 2^25993291 is an apocalyptic number.

25993291 is a deficient number, since it is larger than the sum of its proper divisors (515509).

25993291 is a wasteful number, since it uses less digits than its factorization.

25993291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2409.

The product of its digits is 43740, while the sum is 40.

The square root of 25993291 is about 5098.3615995729. The cubic root of 25993291 is about 296.2241233844.

The spelling of 25993291 in words is "twenty-five million, nine hundred ninety-three thousand, two hundred ninety-one".