25263563 has 16 divisors (see below), whose sum is σ = 28498176. Its totient is φ = 22239360.

The previous prime is 25263551. The next prime is 25263571. The reversal of 25263563 is 36536252.

It is not a de Polignac number, because 25263563 - 2²⁴ = 8486347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25263583) 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, 24998 + ... + 25988.

It is an arithmetic number, because the mean of its divisors is an integer number (1781136).

Almost surely, 2^25263563 is an apocalyptic number.

25263563 is a deficient number, since it is larger than the sum of its proper divisors (3234613).

25263563 is a wasteful number, since it uses less digits than its factorization.

25263563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094.

The product of its digits is 32400, while the sum is 32.

The square root of 25263563 is about 5026.2871983204. The cubic root of 25263563 is about 293.4257343488.

The spelling of 25263563 in words is "twenty-five million, two hundred sixty-three thousand, five hundred sixty-three".