25413556353563 has 4 divisors (see below), whose sum is σ = 29044064404080. Its totient is φ = 21783048303048.

The previous prime is 25413556353509. The next prime is 25413556353571. The reversal of 25413556353563 is 36535365531452.

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 25413556353563 - 2²⁸ = 25413287918107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25413556353499 and 25413556353508.

It is not an unprimeable number, because it can be changed into a prime (25413556353763) 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, 1815254025248 + ... + 1815254025261.

It is an arithmetic number, because the mean of its divisors is an integer number (7261016101020).

Almost surely, 2^{25413556353563} is an apocalyptic number.

25413556353563 is a deficient number, since it is larger than the sum of its proper divisors (3630508050517).

25413556353563 is an equidigital number, since it uses as much as digits as its factorization.

25413556353563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3630508050516.

The product of its digits is 72900000, while the sum is 56.

The spelling of 25413556353563 in words is "twenty-five trillion, four hundred thirteen billion, five hundred fifty-six million, three hundred fifty-three thousand, five hundred sixty-three".