25777782076 has 12 divisors (see below), whose sum is σ = 45117540720. Its totient is φ = 12887056160.

The previous prime is 25777782071. The next prime is 25777782083. The reversal of 25777782076 is 67028777752.

It is a self number, because there is not a number n which added to its sum of digits gives 25777782076.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25777782071) by changing a digit.

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, 426865 + ... + 483496.

It is an arithmetic number, because the mean of its divisors is an integer number (3759795060).

Almost surely, 2^25777782076 is an apocalyptic number.

It is an amenable number.

25777782076 is a deficient number, since it is larger than the sum of its proper divisors (19339758644).

25777782076 is a wasteful number, since it uses less digits than its factorization.

25777782076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917444 (or 917442 counting only the distinct ones).

The product of its (nonzero) digits is 16134720, while the sum is 58.

The spelling of 25777782076 in words is "twenty-five billion, seven hundred seventy-seven million, seven hundred eighty-two thousand, seventy-six".