25755874709 has 2 divisors, whose sum is σ = 25755874710. Its totient is φ = 25755874708.

The previous prime is 25755874699. The next prime is 25755874763. The reversal of 25755874709 is 90747855752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19117210225 + 6638664484 = 138265^2 + 81478^2 .

It is a cyclic number.

It is not a de Polignac number, because 25755874709 - 2⁴ = 25755874693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25755874799) 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, 12877937354 + 12877937355.

It is an arithmetic number, because the mean of its divisors is an integer number (12877937355).

Almost surely, 2^25755874709 is an apocalyptic number.

It is an amenable number.

25755874709 is a deficient number, since it is larger than the sum of its proper divisors (1).

25755874709 is an equidigital number, since it uses as much as digits as its factorization.

25755874709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24696000, while the sum is 59.

The spelling of 25755874709 in words is "twenty-five billion, seven hundred fifty-five million, eight hundred seventy-four thousand, seven hundred nine".