25655041269391 has 2 divisors, whose sum is σ = 25655041269392. Its totient is φ = 25655041269390.

The previous prime is 25655041269313. The next prime is 25655041269397. The reversal of 25655041269391 is 19396214055652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25655041269391 - 2¹⁵ = 25655041236623 is a prime.

It is a super-2 number, since 2×25655041269391² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25655041269397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12827520634695 + 12827520634696.

It is an arithmetic number, because the mean of its divisors is an integer number (12827520634696).

Almost surely, 2^{25655041269391} is an apocalyptic number.

25655041269391 is a deficient number, since it is larger than the sum of its proper divisors (1).

25655041269391 is an equidigital number, since it uses as much as digits as its factorization.

25655041269391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496000, while the sum is 58.

The spelling of 25655041269391 in words is "twenty-five trillion, six hundred fifty-five billion, forty-one million, two hundred sixty-nine thousand, three hundred ninety-one".