25214513305543 has 4 divisors (see below), whose sum is σ = 26027884702528. Its totient is φ = 24401141908560.

The previous prime is 25214513305519. The next prime is 25214513305603. The reversal of 25214513305543 is 34550331541252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25214513305543 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25214513305543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25214513305043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 406685698446 + ... + 406685698507.

It is an arithmetic number, because the mean of its divisors is an integer number (6506971175632).

Almost surely, 2^{25214513305543} is an apocalyptic number.

25214513305543 is a deficient number, since it is larger than the sum of its proper divisors (813371396985).

25214513305543 is an equidigital number, since it uses as much as digits as its factorization.

25214513305543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813371396984.

The product of its (nonzero) digits is 1080000, while the sum is 43.

Adding to 25214513305543 its reverse (34550331541252), we get a palindrome (59764844846795).

The spelling of 25214513305543 in words is "twenty-five trillion, two hundred fourteen billion, five hundred thirteen million, three hundred five thousand, five hundred forty-three".