25525500055309 has 2 divisors, whose sum is σ = 25525500055310. Its totient is φ = 25525500055308.

The previous prime is 25525500055303. The next prime is 25525500055337. The reversal of 25525500055309 is 90355000552552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18341116718409 + 7184383336900 = 4282653^2 + 2680370^2 .

It is a cyclic number.

It is not a de Polignac number, because 25525500055309 - 2¹⁷ = 25525499924237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25525500055303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12762750027654 + 12762750027655.

It is an arithmetic number, because the mean of its divisors is an integer number (12762750027655).

Almost surely, 2^{25525500055309} is an apocalyptic number.

It is an amenable number.

25525500055309 is a deficient number, since it is larger than the sum of its proper divisors (1).

25525500055309 is an equidigital number, since it uses as much as digits as its factorization.

25525500055309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1687500, while the sum is 46.

The spelling of 25525500055309 in words is "twenty-five trillion, five hundred twenty-five billion, five hundred million, fifty-five thousand, three hundred nine".