25783863 has 16 divisors (see below), whose sum is σ = 39845376. Its totient is φ = 14525280.

The previous prime is 25783859. The next prime is 25783873. The reversal of 25783863 is 36838752.

It is not a de Polignac number, because 25783863 - 2² = 25783859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25783843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7156 + ... + 10137.

It is an arithmetic number, because the mean of its divisors is an integer number (2490336).

Almost surely, 2^25783863 is an apocalyptic number.

25783863 is a deficient number, since it is larger than the sum of its proper divisors (14061513).

25783863 is a wasteful number, since it uses less digits than its factorization.

25783863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17374.

The product of its digits is 241920, while the sum is 42.

The square root of 25783863 is about 5077.7813068308. The cubic root of 25783863 is about 295.4264177003.

It can be divided in two parts, 2578 and 3863, that added together give a triangular number (6441 = T₁₁₃).

The spelling of 25783863 in words is "twenty-five million, seven hundred eighty-three thousand, eight hundred sixty-three".