25966696789 has 16 divisors (see below), whose sum is σ = 28449083520. Its totient is φ = 23504832000.

The previous prime is 25966696783. The next prime is 25966696793. The reversal of 25966696789 is 98769666952.

It is a cyclic number.

It is not a de Polignac number, because 25966696789 - 2²¹ = 25964599637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25966696783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2510749 + ... + 2521069.

It is an arithmetic number, because the mean of its divisors is an integer number (1778067720).

Almost surely, 2^25966696789 is an apocalyptic number.

It is an amenable number.

25966696789 is a deficient number, since it is larger than the sum of its proper divisors (2482386731).

25966696789 is a wasteful number, since it uses less digits than its factorization.

25966696789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11292.

The product of its digits is 529079040, while the sum is 73.

The spelling of 25966696789 in words is "twenty-five billion, nine hundred sixty-six million, six hundred ninety-six thousand, seven hundred eighty-nine".