25145448589 has 2 divisors, whose sum is σ = 25145448590. Its totient is φ = 25145448588.

The previous prime is 25145448569. The next prime is 25145448599. The reversal of 25145448589 is 98584454152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23580059364 + 1565389225 = 153558^2 + 39565^2 .

It is a cyclic number.

It is not a de Polignac number, because 25145448589 - 2⁹ = 25145448077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25145448569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12572724294 + 12572724295.

It is an arithmetic number, because the mean of its divisors is an integer number (12572724295).

Almost surely, 2^25145448589 is an apocalyptic number.

It is an amenable number.

25145448589 is a deficient number, since it is larger than the sum of its proper divisors (1).

25145448589 is an equidigital number, since it uses as much as digits as its factorization.

25145448589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216000, while the sum is 55.

The spelling of 25145448589 in words is "twenty-five billion, one hundred forty-five million, four hundred forty-eight thousand, five hundred eighty-nine".