25522563 has 16 divisors (see below), whose sum is σ = 38128896. Its totient is φ = 15049440.

The previous prime is 25522561. The next prime is 25522577. The reversal of 25522563 is 36522552.

It is not a de Polignac number, because 25522563 - 2¹ = 25522561 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25522563.

It is not an unprimeable number, because it can be changed into a prime (25522561) 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 15 ways as a sum of consecutive naturals, for example, 9231 + ... + 11672.

It is an arithmetic number, because the mean of its divisors is an integer number (2383056).

Almost surely, 2^25522563 is an apocalyptic number.

25522563 is a deficient number, since it is larger than the sum of its proper divisors (12606333).

25522563 is a wasteful number, since it uses less digits than its factorization.

25522563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20954.

The product of its digits is 18000, while the sum is 30.

The square root of 25522563 is about 5051.9860451114. The cubic root of 25522563 is about 294.4250527266.

It can be divided in two parts, 2552 and 2563, that added together give a palindrome (5115).

The spelling of 25522563 in words is "twenty-five million, five hundred twenty-two thousand, five hundred sixty-three".