25817532127231 has 8 divisors (see below), whose sum is σ = 28090130119184. Its totient is φ = 23585881847040.

The previous prime is 25817532127133. The next prime is 25817532127241. The reversal of 25817532127231 is 13272123571852.

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 25817532127231 - 2²³ = 25817523738623 is a prime.

It is a super-2 number, since 2×25817532127231² (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 (25817532127241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10236926625 + ... + 10236929146.

It is an arithmetic number, because the mean of its divisors is an integer number (3511266264898).

Almost surely, 2^{25817532127231} is an apocalyptic number.

25817532127231 is a deficient number, since it is larger than the sum of its proper divisors (2272597991953).

25817532127231 is a wasteful number, since it uses less digits than its factorization.

25817532127231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20473855881.

The product of its digits is 1411200, while the sum is 49.

The spelling of 25817532127231 in words is "twenty-five trillion, eight hundred seventeen billion, five hundred thirty-two million, one hundred twenty-seven thousand, two hundred thirty-one".