25580580049 has 4 divisors (see below), whose sum is σ = 25589468160. Its totient is φ = 25571691940.

The previous prime is 25580580041. The next prime is 25580580083. The reversal of 25580580049 is 94008508552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25580580049 - 2³ = 25580580041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25580579990 and 25580580008.

It is not an unprimeable number, because it can be changed into a prime (25580580041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4439737 + ... + 4445494.

It is an arithmetic number, because the mean of its divisors is an integer number (6397367040).

Almost surely, 2^25580580049 is an apocalyptic number.

It is an amenable number.

25580580049 is a deficient number, since it is larger than the sum of its proper divisors (8888111).

25580580049 is an equidigital number, since it uses as much as digits as its factorization.

25580580049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8888110.

The product of its (nonzero) digits is 576000, while the sum is 46.

The spelling of 25580580049 in words is "twenty-five billion, five hundred eighty million, five hundred eighty thousand, forty-nine".