25852663559 has 4 divisors (see below), whose sum is σ = 26686620480. Its totient is φ = 25018706640.

The previous prime is 25852663549. The next prime is 25852663561. The reversal of 25852663559 is 95536625852.

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 25852663559 - 2²⁴ = 25835886343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25852663549) 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, 416978414 + ... + 416978475.

It is an arithmetic number, because the mean of its divisors is an integer number (6671655120).

Almost surely, 2^25852663559 is an apocalyptic number.

25852663559 is a deficient number, since it is larger than the sum of its proper divisors (833956921).

25852663559 is an equidigital number, since it uses as much as digits as its factorization.

25852663559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833956920.

The product of its digits is 19440000, while the sum is 56.

The spelling of 25852663559 in words is "twenty-five billion, eight hundred fifty-two million, six hundred sixty-three thousand, five hundred fifty-nine".