25389262117 has 2 divisors, whose sum is σ = 25389262118. Its totient is φ = 25389262116.

The previous prime is 25389262079. The next prime is 25389262121. The reversal of 25389262117 is 71126298352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24066557956 + 1322704161 = 155134^2 + 36369^2 .

It is a cyclic number.

It is not a de Polignac number, because 25389262117 - 2¹¹ = 25389260069 is a prime.

It is a super-2 number, since 2×25389262117² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25389262127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12694631058 + 12694631059.

It is an arithmetic number, because the mean of its divisors is an integer number (12694631059).

Almost surely, 2^25389262117 is an apocalyptic number.

It is an amenable number.

25389262117 is a deficient number, since it is larger than the sum of its proper divisors (1).

25389262117 is an equidigital number, since it uses as much as digits as its factorization.

25389262117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 46.

The spelling of 25389262117 in words is "twenty-five billion, three hundred eighty-nine million, two hundred sixty-two thousand, one hundred seventeen".