25766765683 has 4 divisors (see below), whose sum is σ = 27282457800. Its totient is φ = 24251073568.

The previous prime is 25766765639. The next prime is 25766765729. The reversal of 25766765683 is 38656766752.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25766765683 - 2¹⁷ = 25766634611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25766765603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 757846033 + ... + 757846066.

It is an arithmetic number, because the mean of its divisors is an integer number (6820614450).

Almost surely, 2^25766765683 is an apocalyptic number.

25766765683 is a deficient number, since it is larger than the sum of its proper divisors (1515692117).

25766765683 is a wasteful number, since it uses less digits than its factorization.

25766765683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1515692116.

The product of its digits is 76204800, while the sum is 61.

The spelling of 25766765683 in words is "twenty-five billion, seven hundred sixty-six million, seven hundred sixty-five thousand, six hundred eighty-three".