25389563 has 2 divisors, whose sum is σ = 25389564. Its totient is φ = 25389562.

The previous prime is 25389521. The next prime is 25389571. The reversal of 25389563 is 36598352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25389563 - 2⁶ = 25389499 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25389563.

It is not a weakly prime, because it can be changed into another prime (25389863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12694781 + 12694782.

It is an arithmetic number, because the mean of its divisors is an integer number (12694782).

Almost surely, 2^25389563 is an apocalyptic number.

25389563 is a deficient number, since it is larger than the sum of its proper divisors (1).

25389563 is an equidigital number, since it uses as much as digits as its factorization.

25389563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 194400, while the sum is 41.

The square root of 25389563 is about 5038.8057116741. The cubic root of 25389563 is about 293.9127380742.

It can be divided in two parts, 25389 and 563, that added together give a palindrome (25952).

The spelling of 25389563 in words is "twenty-five million, three hundred eighty-nine thousand, five hundred sixty-three".