25804263 has 4 divisors (see below), whose sum is σ = 34405688. Its totient is φ = 17202840.

The previous prime is 25804243. The next prime is 25804309. The reversal of 25804263 is 36240852.

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

It is not a de Polignac number, because 25804263 - 2⁶ = 25804199 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25804263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25804213) 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, 4300708 + ... + 4300713.

It is an arithmetic number, because the mean of its divisors is an integer number (8601422).

Almost surely, 2^25804263 is an apocalyptic number.

25804263 is a deficient number, since it is larger than the sum of its proper divisors (8601425).

25804263 is an equidigital number, since it uses as much as digits as its factorization.

25804263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8601424.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 25804263 is about 5079.7896609998. The cubic root of 25804263 is about 295.5043102203.

The spelling of 25804263 in words is "twenty-five million, eight hundred four thousand, two hundred sixty-three".