25790518663 has 8 divisors (see below), whose sum is σ = 31742176928. Its totient is φ = 20405685024.

The previous prime is 25790518643. The next prime is 25790518669. The reversal of 25790518663 is 36681509752.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25790518663 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25790518663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25790518669) 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, 141706056 + ... + 141706237.

It is an arithmetic number, because the mean of its divisors is an integer number (3967772116).

Almost surely, 2^25790518663 is an apocalyptic number.

25790518663 is a deficient number, since it is larger than the sum of its proper divisors (5951658265).

25790518663 is a wasteful number, since it uses less digits than its factorization.

25790518663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283412313.

The product of its (nonzero) digits is 2721600, while the sum is 52.

The spelling of 25790518663 in words is "twenty-five billion, seven hundred ninety million, five hundred eighteen thousand, six hundred sixty-three".