25775087238265 has 4 divisors (see below), whose sum is σ = 30930104685924. Its totient is φ = 20620069790608.

The previous prime is 25775087238239. The next prime is 25775087238347. The reversal of 25775087238265 is 56283278057752.

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 3150880605184 + 22624206633081 = 1775072^2 + 4756491^2 .

It is a cyclic number.

It is not a de Polignac number, because 25775087238265 - 2¹⁷ = 25775087107193 is a prime.

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 25775087238265.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2577508723822 + ... + 2577508723831.

It is an arithmetic number, because the mean of its divisors is an integer number (7732526171481).

Almost surely, 2^{25775087238265} is an apocalyptic number.

It is an amenable number.

25775087238265 is a deficient number, since it is larger than the sum of its proper divisors (5155017447659).

25775087238265 is an equidigital number, since it uses as much as digits as its factorization.

25775087238265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5155017447658.

The product of its (nonzero) digits is 395136000, while the sum is 67.

The spelling of 25775087238265 in words is "twenty-five trillion, seven hundred seventy-five billion, eighty-seven million, two hundred thirty-eight thousand, two hundred sixty-five".