25768681 has 8 divisors (see below), whose sum is σ = 26092544. Its totient is φ = 25446960.

The previous prime is 25768679. The next prime is 25768697. The reversal of 25768681 is 18686752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25768681 - 2¹ = 25768679 is a prime.

It is a super-3 number, since 3×25768681³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25768621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41731 + ... + 42343.

It is an arithmetic number, because the mean of its divisors is an integer number (3261568).

Almost surely, 2^25768681 is an apocalyptic number.

It is an amenable number.

25768681 is a deficient number, since it is larger than the sum of its proper divisors (323863).

25768681 is a wasteful number, since it uses less digits than its factorization.

25768681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071.

The product of its digits is 161280, while the sum is 43.

The square root of 25768681 is about 5076.2861424471. The cubic root of 25768681 is about 295.3684221951.

The spelling of 25768681 in words is "twenty-five million, seven hundred sixty-eight thousand, six hundred eighty-one".