25481850089 has 2 divisors, whose sum is σ = 25481850090. Its totient is φ = 25481850088.

The previous prime is 25481850061. The next prime is 25481850101. The reversal of 25481850089 is 98005818452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23936731225 + 1545118864 = 154715^2 + 39308^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25481850089 is a prime.

It is not a weakly prime, because it can be changed into another prime (25481852089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12740925044 + 12740925045.

It is an arithmetic number, because the mean of its divisors is an integer number (12740925045).

Almost surely, 2^25481850089 is an apocalyptic number.

It is an amenable number.

25481850089 is a deficient number, since it is larger than the sum of its proper divisors (1).

25481850089 is an equidigital number, since it uses as much as digits as its factorization.

25481850089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 921600, while the sum is 50.

The spelling of 25481850089 in words is "twenty-five billion, four hundred eighty-one million, eight hundred fifty thousand, eighty-nine".