25797855241 has 4 divisors (see below), whose sum is σ = 25803121792. Its totient is φ = 25792588692.

The previous prime is 25797855229. The next prime is 25797855269. The reversal of 25797855241 is 14255879752.

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 a de Polignac number, because none of the positive numbers 2^k-25797855241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25797855211) 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, 2625921 + ... + 2635726.

It is an arithmetic number, because the mean of its divisors is an integer number (6450780448).

Almost surely, 2^25797855241 is an apocalyptic number.

It is an amenable number.

25797855241 is a deficient number, since it is larger than the sum of its proper divisors (5266551).

25797855241 is an equidigital number, since it uses as much as digits as its factorization.

25797855241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5266550.

The product of its digits is 7056000, while the sum is 55.

The spelling of 25797855241 in words is "twenty-five billion, seven hundred ninety-seven million, eight hundred fifty-five thousand, two hundred forty-one".