25808266939 has 16 divisors (see below), whose sum is σ = 31785779200. Its totient is φ = 20405740320.

The previous prime is 25808266859. The next prime is 25808266943. The reversal of 25808266939 is 93966280852.

It is a happy number.

It is not a de Polignac number, because 25808266939 - 2²³ = 25799878331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25808266039) by changing a digit.

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, 37462 + ... + 230260.

It is an arithmetic number, because the mean of its divisors is an integer number (1986611200).

Almost surely, 2^25808266939 is an apocalyptic number.

25808266939 is a deficient number, since it is larger than the sum of its proper divisors (5977512261).

25808266939 is a wasteful number, since it uses less digits than its factorization.

25808266939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194290.

The product of its (nonzero) digits is 11197440, while the sum is 58.

The spelling of 25808266939 in words is "twenty-five billion, eight hundred eight million, two hundred sixty-six thousand, nine hundred thirty-nine".