25685814116 has 6 divisors (see below), whose sum is σ = 44950174710. Its totient is φ = 12842907056.

The previous prime is 25685814113. The next prime is 25685814163. The reversal of 25685814116 is 61141858652.

It can be written as a sum of positive squares in only one way, i.e., 21853708900 + 3832105216 = 147830^2 + 61904^2 .

It is a super-2 number, since 2×25685814116² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25685814113) by changing a digit.

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 as a sum of consecutive naturals, namely, 3210726761 + ... + 3210726768.

It is an arithmetic number, because the mean of its divisors is an integer number (7491695785).

Almost surely, 2^25685814116 is an apocalyptic number.

It is an amenable number.

25685814116 is a deficient number, since it is larger than the sum of its proper divisors (19264360594).

25685814116 is a wasteful number, since it uses less digits than its factorization.

25685814116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6421453533 (or 6421453531 counting only the distinct ones).

The product of its digits is 460800, while the sum is 47.

The spelling of 25685814116 in words is "twenty-five billion, six hundred eighty-five million, eight hundred fourteen thousand, one hundred sixteen".