25536563 has 8 divisors (see below), whose sum is σ = 28172256. Its totient is φ = 22996800.

The previous prime is 25536547. The next prime is 25536571. The reversal of 25536563 is 36563552.

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 25536563 - 2⁴ = 25536547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25536523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23423 + ... + 24488.

It is an arithmetic number, because the mean of its divisors is an integer number (3521532).

Almost surely, 2^25536563 is an apocalyptic number.

25536563 is a deficient number, since it is larger than the sum of its proper divisors (2635693).

25536563 is a wasteful number, since it uses less digits than its factorization.

25536563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47965.

The product of its digits is 81000, while the sum is 35.

The square root of 25536563 is about 5053.3714488448. The cubic root of 25536563 is about 294.4788769616.

The spelling of 25536563 in words is "twenty-five million, five hundred thirty-six thousand, five hundred sixty-three".