25838563 has 8 divisors (see below), whose sum is σ = 26343056. Its totient is φ = 25336800.

The previous prime is 25838551. The next prime is 25838581. The reversal of 25838563 is 36583852.

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 a de Polignac number, because none of the positive numbers 2^k-25838563 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25838503) 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, 37048 + ... + 37738.

It is an arithmetic number, because the mean of its divisors is an integer number (3292882).

Almost surely, 2^25838563 is an apocalyptic number.

25838563 is a deficient number, since it is larger than the sum of its proper divisors (504493).

25838563 is an equidigital number, since it uses as much as digits as its factorization.

25838563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365.

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

The square root of 25838563 is about 5083.1646638684. The cubic root of 25838563 is about 295.6351840762.

The spelling of 25838563 in words is "twenty-five million, eight hundred thirty-eight thousand, five hundred sixty-three".