25819138036 has 12 divisors (see below), whose sum is σ = 45184789440. Its totient is φ = 12909198200.

The previous prime is 25819137997. The next prime is 25819138049. The reversal of 25819138036 is 63083191852.

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 3 ways as a sum of consecutive naturals, for example, 116325 + ... + 255283.

It is an arithmetic number, because the mean of its divisors is an integer number (3765399120).

Almost surely, 2^25819138036 is an apocalyptic number.

It is an amenable number.

25819138036 is a deficient number, since it is larger than the sum of its proper divisors (19365651404).

25819138036 is a wasteful number, since it uses less digits than its factorization.

25819138036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185414 (or 185412 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 46.

The spelling of 25819138036 in words is "twenty-five billion, eight hundred nineteen million, one hundred thirty-eight thousand, thirty-six".