25343202054505 has 4 divisors (see below), whose sum is σ = 30411842465412. Its totient is φ = 20274561643600.

The previous prime is 25343202054461. The next prime is 25343202054517. The reversal of 25343202054505 is 50545020234352.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9000846019881 + 16342356034624 = 3000141^2 + 4042568^2 .

It is not a de Polignac number, because 25343202054505 - 2¹³ = 25343202046313 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2534320205446 + ... + 2534320205455.

It is an arithmetic number, because the mean of its divisors is an integer number (7602960616353).

Almost surely, 2^{25343202054505} is an apocalyptic number.

It is an amenable number.

25343202054505 is a deficient number, since it is larger than the sum of its proper divisors (5068640410907).

25343202054505 is an equidigital number, since it uses as much as digits as its factorization.

25343202054505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5068640410906.

The product of its (nonzero) digits is 720000, while the sum is 40.

Adding to 25343202054505 its reverse (50545020234352), we get a palindrome (75888222288857).

The spelling of 25343202054505 in words is "twenty-five trillion, three hundred forty-three billion, two hundred two million, fifty-four thousand, five hundred five".