25506206051143 has 4 divisors (see below), whose sum is σ = 25506867403360. Its totient is φ = 25505544698928.

The previous prime is 25506206051099. The next prime is 25506206051147. The reversal of 25506206051143 is 34115060260552.

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 25506206051143 - 2¹³ = 25506206042951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25506206051096 and 25506206051105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25506206051147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330618255 + ... + 330695392.

It is an arithmetic number, because the mean of its divisors is an integer number (6376716850840).

Almost surely, 2^{25506206051143} is an apocalyptic number.

25506206051143 is a deficient number, since it is larger than the sum of its proper divisors (661352217).

25506206051143 is an equidigital number, since it uses as much as digits as its factorization.

25506206051143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661352216.

The product of its (nonzero) digits is 216000, while the sum is 40.

The spelling of 25506206051143 in words is "twenty-five trillion, five hundred six billion, two hundred six million, fifty-one thousand, one hundred forty-three".