25644118902137 has 2 divisors, whose sum is σ = 25644118902138. Its totient is φ = 25644118902136.

The previous prime is 25644118902121. The next prime is 25644118902163. The reversal of 25644118902137 is 73120981144652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25066003507216 + 578115394921 = 5006596^2 + 760339^2 .

It is a cyclic number.

It is not a de Polignac number, because 25644118902137 - 2⁴ = 25644118902121 is a prime.

It is not a weakly prime, because it can be changed into another prime (25644118904137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12822059451068 + 12822059451069.

It is an arithmetic number, because the mean of its divisors is an integer number (12822059451069).

It is a 1-persistent number, because it is pandigital, but 2⋅25644118902137 = 51288237804274 is not.

Almost surely, 2^{25644118902137} is an apocalyptic number.

It is an amenable number.

25644118902137 is a deficient number, since it is larger than the sum of its proper divisors (1).

25644118902137 is an equidigital number, since it uses as much as digits as its factorization.

25644118902137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 25644118902137 in words is "twenty-five trillion, six hundred forty-four billion, one hundred eighteen million, nine hundred two thousand, one hundred thirty-seven".