25934669666 has 32 divisors (see below), whose sum is σ = 43506504000. Its totient is φ = 11540636352.

The previous prime is 25934669639. The next prime is 25934669669. The reversal of 25934669666 is 66696643952.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 25934669599 and 25934669608.

It is not an unprimeable number, because it can be changed into a prime (25934669669) 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 15 ways as a sum of consecutive naturals, for example, 277256 + ... + 358803.

It is an arithmetic number, because the mean of its divisors is an integer number (1359578250).

Almost surely, 2^25934669666 is an apocalyptic number.

25934669666 is a deficient number, since it is larger than the sum of its proper divisors (17571834334).

25934669666 is a wasteful number, since it uses less digits than its factorization.

25934669666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636146.

The product of its digits is 75582720, while the sum is 62.

The spelling of 25934669666 in words is "twenty-five billion, nine hundred thirty-four million, six hundred sixty-nine thousand, six hundred sixty-six".