25782936880 has 40 divisors (see below), whose sum is σ = 60618888000. Its totient is φ = 10197293568.

The previous prime is 25782936857. The next prime is 25782936887. The reversal of 25782936880 is 8863928752.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-3 number, since 3×25782936880³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (25782936887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1803480 + ... + 1817719.

It is an arithmetic number, because the mean of its divisors is an integer number (1515472200).

Almost surely, 2^25782936880 is an apocalyptic number.

25782936880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25782936880 is an abundant number, since it is smaller than the sum of its proper divisors (34835951120).

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

25782936880 is a wasteful number, since it uses less digits than its factorization.

25782936880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3621301 (or 3621295 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 58.

The spelling of 25782936880 in words is "twenty-five billion, seven hundred eighty-two million, nine hundred thirty-six thousand, eight hundred eighty".