25853863 has 8 divisors (see below), whose sum is σ = 30832128. Its totient is φ = 21196824.

The previous prime is 25853857. The next prime is 25853887. The reversal of 25853863 is 36835852.

It is a happy number.

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 25853863 - 2⁹ = 25853351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25853843) 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, 80131 + ... + 80452.

It is an arithmetic number, because the mean of its divisors is an integer number (3854016).

Almost surely, 2^25853863 is an apocalyptic number.

25853863 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

25853863 is a deficient number, since it is larger than the sum of its proper divisors (4978265).

25853863 is a wasteful number, since it uses less digits than its factorization.

25853863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160613.

The product of its digits is 172800, while the sum is 40.

The square root of 25853863 is about 5084.6694091160. The cubic root of 25853863 is about 295.6935248569.

The spelling of 25853863 in words is "twenty-five million, eight hundred fifty-three thousand, eight hundred sixty-three".