25747992868 has 12 divisors (see below), whose sum is σ = 48525063580. Its totient is φ = 11883688992.

The previous prime is 25747992811. The next prime is 25747992869. The reversal of 25747992868 is 86829974752.

It can be written as a sum of positive squares in 2 ways, for example, as 2626357504 + 23121635364 = 51248^2 + 152058^2 .

It is not an unprimeable number, because it can be changed into a prime (25747992869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247576803 + ... + 247576906.

Almost surely, 2^25747992868 is an apocalyptic number.

It is an amenable number.

25747992868 is a deficient number, since it is larger than the sum of its proper divisors (22777070712).

25747992868 is a wasteful number, since it uses less digits than its factorization.

25747992868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495153726 (or 495153724 counting only the distinct ones).

The product of its digits is 121927680, while the sum is 67.

The spelling of 25747992868 in words is "twenty-five billion, seven hundred forty-seven million, nine hundred ninety-two thousand, eight hundred sixty-eight".