25727121318 has 8 divisors (see below), whose sum is σ = 51454242648. Its totient is φ = 8575707104.

The previous prime is 25727121269. The next prime is 25727121341. The reversal of 25727121318 is 81312172752.

25727121318 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

25727121318 is an admirable number.

It is a super-2 number, since 2×25727121318² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 2143926771 + ... + 2143926782.

It is an arithmetic number, because the mean of its divisors is an integer number (6431780331).

Almost surely, 2^25727121318 is an apocalyptic number.

25727121318 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

25727121318 is a wasteful number, since it uses less digits than its factorization.

25727121318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4287853558.

The product of its digits is 47040, while the sum is 39.

The spelling of 25727121318 in words is "twenty-five billion, seven hundred twenty-seven million, one hundred twenty-one thousand, three hundred eighteen".