25238882806543 has 8 divisors (see below), whose sum is σ = 28951665887520. Its totient is φ = 21552906824160.

The previous prime is 25238882806499. The next prime is 25238882806589. The reversal of 25238882806543 is 34560828883252.

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 25238882806543 - 2²⁹ = 25238345935631 is a prime.

It is a super-2 number, since 2×25238882806543² (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 (25238882806843) 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, 6701772628 + ... + 6701776393.

It is an arithmetic number, because the mean of its divisors is an integer number (3618958235940).

Almost surely, 2^{25238882806543} is an apocalyptic number.

25238882806543 is a deficient number, since it is larger than the sum of its proper divisors (3712783080977).

25238882806543 is a wasteful number, since it uses less digits than its factorization.

25238882806543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13403549297.

The product of its (nonzero) digits is 176947200, while the sum is 64.

The spelling of 25238882806543 in words is "twenty-five trillion, two hundred thirty-eight billion, eight hundred eighty-two million, eight hundred six thousand, five hundred forty-three".