25841211841 has 4 divisors (see below), whose sum is σ = 25908682752. Its totient is φ = 25773740932.

The previous prime is 25841211821. The next prime is 25841211887. The reversal of 25841211841 is 14811214852.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25841211841 - 2⁷ = 25841211713 is a prime.

It is a super-2 number, since 2×25841211841² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25841211841.

It is not an unprimeable number, because it can be changed into a prime (25841211821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33734881 + ... + 33735646.

It is an arithmetic number, because the mean of its divisors is an integer number (6477170688).

Almost surely, 2^25841211841 is an apocalyptic number.

It is an amenable number.

25841211841 is a deficient number, since it is larger than the sum of its proper divisors (67470911).

25841211841 is an equidigital number, since it uses as much as digits as its factorization.

25841211841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67470910.

The product of its digits is 20480, while the sum is 37.

The spelling of 25841211841 in words is "twenty-five billion, eight hundred forty-one million, two hundred eleven thousand, eight hundred forty-one".