25782797578356 has 192 divisors, whose sum is σ = 87109301583360. Its totient is φ = 6399866972160.

The previous prime is 25782797578319. The next prime is 25782797578423. The reversal of 25782797578356 is 65387579728752.

25782797578356 is a `hidden beast` number, since 2 + 5 + 7 + 8 + 2 + 7 + 9 + 7 + 578 + 35 + 6 = 666.

It is a super-3 number, since 3×25782797578356³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 76991815 + ... + 77325966.

It is an arithmetic number, because the mean of its divisors is an integer number (453694279080).

Almost surely, 2^{25782797578356} is an apocalyptic number.

25782797578356 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

25782797578356 is an abundant number, since it is smaller than the sum of its proper divisors (61326504005004).

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

25782797578356 is a wasteful number, since it uses less digits than its factorization.

25782797578356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154317831 (or 154317823 counting only the distinct ones).

The product of its digits is 12446784000, while the sum is 81.

The spelling of 25782797578356 in words is "twenty-five trillion, seven hundred eighty-two billion, seven hundred ninety-seven million, five hundred seventy-eight thousand, three hundred fifty-six".