25851305005 has 16 divisors (see below), whose sum is σ = 31082373504. Its totient is φ = 20640553920.

The previous prime is 25851304987. The next prime is 25851305021. The reversal of 25851305005 is 50050315852.

It is a de Polignac number, because none of the positive numbers 2^k-25851305005 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7106047 + ... + 7109683.

It is an arithmetic number, because the mean of its divisors is an integer number (1942648344).

Almost surely, 2^25851305005 is an apocalyptic number.

It is an amenable number.

25851305005 is a deficient number, since it is larger than the sum of its proper divisors (5231068499).

25851305005 is a wasteful number, since it uses less digits than its factorization.

25851305005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6036.

The product of its (nonzero) digits is 30000, while the sum is 34.

The spelling of 25851305005 in words is "twenty-five billion, eight hundred fifty-one million, three hundred five thousand, five".