25004498789 has 2 divisors, whose sum is σ = 25004498790. Its totient is φ = 25004498788.

The previous prime is 25004498777. The next prime is 25004498803. The reversal of 25004498789 is 98789440052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19497374689 + 5507124100 = 139633^2 + 74210^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25004498789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25004498749) 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, 12502249394 + 12502249395.

It is an arithmetic number, because the mean of its divisors is an integer number (12502249395).

Almost surely, 2^25004498789 is an apocalyptic number.

It is an amenable number.

25004498789 is a deficient number, since it is larger than the sum of its proper divisors (1).

25004498789 is an equidigital number, since it uses as much as digits as its factorization.

25004498789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5806080, while the sum is 56.

The spelling of 25004498789 in words is "twenty-five billion, four million, four hundred ninety-eight thousand, seven hundred eighty-nine".