25555302467869 has 2 divisors, whose sum is σ = 25555302467870. Its totient is φ = 25555302467868.

The previous prime is 25555302467867. The next prime is 25555302467887. The reversal of 25555302467869 is 96876420355552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17661956027769 + 7893346440100 = 4202613^2 + 2809510^2 .

It is a cyclic number.

It is not a de Polignac number, because 25555302467869 - 2¹ = 25555302467867 is a prime.

It is a super-2 number, since 2×25555302467869² (a number of 28 digits) contains 22 as substring.

Together with 25555302467867, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25555302467867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12777651233934 + 12777651233935.

It is an arithmetic number, because the mean of its divisors is an integer number (12777651233935).

Almost surely, 2^{25555302467869} is an apocalyptic number.

It is an amenable number.

25555302467869 is a deficient number, since it is larger than the sum of its proper divisors (1).

25555302467869 is an equidigital number, since it uses as much as digits as its factorization.

25555302467869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320000, while the sum is 67.

The spelling of 25555302467869 in words is "twenty-five trillion, five hundred fifty-five billion, three hundred two million, four hundred sixty-seven thousand, eight hundred sixty-nine".