25185009089 has 2 divisors, whose sum is σ = 25185009090. Its totient is φ = 25185009088.

The previous prime is 25185009049. The next prime is 25185009097. The reversal of 25185009089 is 98090058152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17525258689 + 7659750400 = 132383^2 + 87520^2 .

It is a cyclic number.

It is not a de Polignac number, because 25185009089 - 2³² = 20890041793 is a prime.

It is not a weakly prime, because it can be changed into another prime (25185009049) 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, 12592504544 + 12592504545.

It is an arithmetic number, because the mean of its divisors is an integer number (12592504545).

Almost surely, 2^25185009089 is an apocalyptic number.

It is an amenable number.

25185009089 is a deficient number, since it is larger than the sum of its proper divisors (1).

25185009089 is an equidigital number, since it uses as much as digits as its factorization.

25185009089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 47.

The spelling of 25185009089 in words is "twenty-five billion, one hundred eighty-five million, nine thousand, eighty-nine".