25343605806 has 16 divisors (see below), whose sum is σ = 50814891984. Its totient is φ = 8426588544.

The previous prime is 25343605757. The next prime is 25343605817. The reversal of 25343605806 is 60850634352.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5317435 + ... + 5322198.

It is an arithmetic number, because the mean of its divisors is an integer number (3175930749).

Almost surely, 2^25343605806 is an apocalyptic number.

25343605806 is an abundant number, since it is smaller than the sum of its proper divisors (25471286178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25343605806 is a wasteful number, since it uses less digits than its factorization.

25343605806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10640035.

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 25343605806 in words is "twenty-five billion, three hundred forty-three million, six hundred five thousand, eight hundred six".