25563263 has 16 divisors (see below), whose sum is σ = 28957824. Its totient is φ = 22361760.

The previous prime is 25563259. The next prime is 25563277. The reversal of 25563263 is 36236552.

It is a cyclic number.

It is not a de Polignac number, because 25563263 - 2² = 25563259 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 (25563233) 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, 43256 + ... + 43842.

It is an arithmetic number, because the mean of its divisors is an integer number (1809864).

Almost surely, 2^25563263 is an apocalyptic number.

25563263 is a deficient number, since it is larger than the sum of its proper divisors (3394561).

25563263 is a wasteful number, since it uses less digits than its factorization.

25563263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742.

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

The square root of 25563263 is about 5056.0125593198. The cubic root of 25563263 is about 294.5814729575.

Subtracting 25563263 from its reverse (36236552), we obtain a square (10673289 = 3267²).

The spelling of 25563263 in words is "twenty-five million, five hundred sixty-three thousand, two hundred sixty-three".