25529563 has 8 divisors (see below), whose sum is σ = 28207008. Its totient is φ = 22982784.

The previous prime is 25529557. The next prime is 25529579. The reversal of 25529563 is 36592552.

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 25529563 - 2⁵ = 25529531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25529503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32256 + ... + 33037.

It is an arithmetic number, because the mean of its divisors is an integer number (3525876).

Almost surely, 2^25529563 is an apocalyptic number.

25529563 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

25529563 is a deficient number, since it is larger than the sum of its proper divisors (2677445).

25529563 is a wasteful number, since it uses less digits than its factorization.

25529563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65333.

The product of its digits is 81000, while the sum is 37.

The square root of 25529563 is about 5052.6787944614. The cubic root of 25529563 is about 294.4519673038.

The spelling of 25529563 in words is "twenty-five million, five hundred twenty-nine thousand, five hundred sixty-three".