25494939579168 has 72 divisors (see below), whose sum is σ = 72513308806848. Its totient is φ = 8496897881472.

The previous prime is 25494939579103. The next prime is 25494939579169. The reversal of 25494939579168 is 86197593949452.

25494939579168 is a `hidden beast` number, since 2 + 5 + 4 + 9 + 4 + 9 + 39 + 579 + 1 + 6 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (25494939579169) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5638396 + ... + 9098427.

It is an arithmetic number, because the mean of its divisors is an integer number (1007129288984).

Almost surely, 2^{25494939579168} is an apocalyptic number.

It is an amenable number.

25494939579168 is an abundant number, since it is smaller than the sum of its proper divisors (47018369227680).

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

25494939579168 is a wasteful number, since it uses less digits than its factorization.

25494939579168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14742846 (or 14742835 counting only the distinct ones).

The product of its digits is 5290790400, while the sum is 81.

The spelling of 25494939579168 in words is "twenty-five trillion, four hundred ninety-four billion, nine hundred thirty-nine million, five hundred seventy-nine thousand, one hundred sixty-eight".