25805376241 has 4 divisors (see below), whose sum is σ = 25806170484. Its totient is φ = 25804582000.

The previous prime is 25805376209. The next prime is 25805376251. The reversal of 25805376241 is 14267350852.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17208192400 + 8597183841 = 131180^2 + 92721^2 .

It is a cyclic number.

It is not a de Polignac number, because 25805376241 - 2⁵ = 25805376209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25805376251) 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, 346210 + ... + 414091.

It is an arithmetic number, because the mean of its divisors is an integer number (6451542621).

Almost surely, 2^25805376241 is an apocalyptic number.

It is an amenable number.

25805376241 is a deficient number, since it is larger than the sum of its proper divisors (794243).

25805376241 is an equidigital number, since it uses as much as digits as its factorization.

25805376241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794242.

The product of its (nonzero) digits is 403200, while the sum is 43.

The spelling of 25805376241 in words is "twenty-five billion, eight hundred five million, three hundred seventy-six thousand, two hundred forty-one".