25582525558561 has 4 divisors (see below), whose sum is σ = 25635056412352. Its totient is φ = 25529994704772.

The previous prime is 25582525558559. The next prime is 25582525558631. The reversal of 25582525558561 is 16585552528552.

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 25582525558561 - 2¹ = 25582525558559 is a prime.

It is a super-2 number, since 2×25582525558561² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25582525558493 and 25582525558502.

It is not an unprimeable number, because it can be changed into a prime (25582525558501) 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, 26265426165 + ... + 26265427138.

It is an arithmetic number, because the mean of its divisors is an integer number (6408764103088).

Almost surely, 2^{25582525558561} is an apocalyptic number.

It is an amenable number.

25582525558561 is a deficient number, since it is larger than the sum of its proper divisors (52530853791).

25582525558561 is an equidigital number, since it uses as much as digits as its factorization.

25582525558561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52530853790.

The product of its digits is 240000000, while the sum is 64.

The spelling of 25582525558561 in words is "twenty-five trillion, five hundred eighty-two billion, five hundred twenty-five million, five hundred fifty-eight thousand, five hundred sixty-one".