25056246563 has 4 divisors (see below), whose sum is σ = 25589358240. Its totient is φ = 24523134888.

The previous prime is 25056246559. The next prime is 25056246571. The reversal of 25056246563 is 36564265052.

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 25056246563 - 2² = 25056246559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25056246503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266555768 + ... + 266555861.

It is an arithmetic number, because the mean of its divisors is an integer number (6397339560).

Almost surely, 2^25056246563 is an apocalyptic number.

25056246563 is a deficient number, since it is larger than the sum of its proper divisors (533111677).

25056246563 is an equidigital number, since it uses as much as digits as its factorization.

25056246563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533111676.

The product of its (nonzero) digits is 1296000, while the sum is 44.

The spelling of 25056246563 in words is "twenty-five billion, fifty-six million, two hundred forty-six thousand, five hundred sixty-three".