25840291 has 8 divisors (see below), whose sum is σ = 27087984. Its totient is φ = 24622080.

The previous prime is 25840279. The next prime is 25840301. The reversal of 25840291 is 19204852.

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 25840291 - 2⁷ = 25840163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25840231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5566 + ... + 9091.

It is an arithmetic number, because the mean of its divisors is an integer number (3385998).

Almost surely, 2^25840291 is an apocalyptic number.

25840291 is a deficient number, since it is larger than the sum of its proper divisors (1247693).

25840291 is a wasteful number, since it uses less digits than its factorization.

25840291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14741.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 25840291 is about 5083.3346338796. The cubic root of 25840291 is about 295.6417743060.

The spelling of 25840291 in words is "twenty-five million, eight hundred forty thousand, two hundred ninety-one".