25055050849 has 2 divisors, whose sum is σ = 25055050850. Its totient is φ = 25055050848.

The previous prime is 25055050781. The next prime is 25055050913. The reversal of 25055050849 is 94805055052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21112090000 + 3942960849 = 145300^2 + 62793^2 .

It is a cyclic number.

It is not a de Polignac number, because 25055050849 - 2¹⁹ = 25054526561 is a prime.

It is not a weakly prime, because it can be changed into another prime (25055050649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12527525424 + 12527525425.

It is an arithmetic number, because the mean of its divisors is an integer number (12527525425).

Almost surely, 2^25055050849 is an apocalyptic number.

It is an amenable number.

25055050849 is a deficient number, since it is larger than the sum of its proper divisors (1).

25055050849 is an equidigital number, since it uses as much as digits as its factorization.

25055050849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360000, while the sum is 43.

The spelling of 25055050849 in words is "twenty-five billion, fifty-five million, fifty thousand, eight hundred forty-nine".