25911717054231 has 8 divisors (see below), whose sum is σ = 34571003912704. Its totient is φ = 17263454115960.

The previous prime is 25911717054227. The next prime is 25911717054239. The reversal of 25911717054231 is 13245071711952.

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

It is not a de Polignac number, because 25911717054231 - 2² = 25911717054227 is a prime.

It is a super-2 number, since 2×25911717054231² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25911717054239) 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, 2755974565 + ... + 2755983966.

It is an arithmetic number, because the mean of its divisors is an integer number (4321375489088).

Almost surely, 2^{25911717054231} is an apocalyptic number.

25911717054231 is a deficient number, since it is larger than the sum of its proper divisors (8659286858473).

25911717054231 is a wasteful number, since it uses less digits than its factorization.

25911717054231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5511960101.

The product of its (nonzero) digits is 529200, while the sum is 48.

The spelling of 25911717054231 in words is "twenty-five trillion, nine hundred eleven billion, seven hundred seventeen million, fifty-four thousand, two hundred thirty-one".