25331563 has 4 divisors (see below), whose sum is σ = 25949448. Its totient is φ = 24713680.

The previous prime is 25331539. The next prime is 25331567. The reversal of 25331563 is 36513352.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25331563 - 2¹⁷ = 25200491 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (25331567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 308881 + ... + 308962.

It is an arithmetic number, because the mean of its divisors is an integer number (6487362).

Almost surely, 2^25331563 is an apocalyptic number.

25331563 is a deficient number, since it is larger than the sum of its proper divisors (617885).

25331563 is an equidigital number, since it uses as much as digits as its factorization.

25331563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617884.

The product of its digits is 8100, while the sum is 28.

The square root of 25331563 is about 5033.0470889909. The cubic root of 25331563 is about 293.6887623668.

It can be divided in two parts, 2533 and 1563, that added together give a 12-th power (4096 = 2¹²).

The spelling of 25331563 in words is "twenty-five million, three hundred thirty-one thousand, five hundred sixty-three".