25666712170996 has 48 divisors (see below), whose sum is σ = 49292793938304. Its totient is φ = 11620719766656.

The previous prime is 25666712170921. The next prime is 25666712171047. The reversal of 25666712170996 is 69907121766652.

It is a super-2 number, since 2×25666712170996² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15780111 + ... + 17330473.

It is an arithmetic number, because the mean of its divisors is an integer number (1026933207048).

Almost surely, 2^{25666712170996} is an apocalyptic number.

25666712170996 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

25666712170996 is a deficient number, since it is larger than the sum of its proper divisors (23626081767308).

25666712170996 is a wasteful number, since it uses less digits than its factorization.

25666712170996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1556440 (or 1556438 counting only the distinct ones).

The product of its (nonzero) digits is 102876480, while the sum is 67.

The spelling of 25666712170996 in words is "twenty-five trillion, six hundred sixty-six billion, seven hundred twelve million, one hundred seventy thousand, nine hundred ninety-six".