25749716990389 has 16 divisors (see below), whose sum is σ = 29516195543040. Its totient is φ = 22005250225200.

The previous prime is 25749716990311. The next prime is 25749716990441. The reversal of 25749716990389 is 98309961794752.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25749716990389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25749716991389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11407062 + ... + 13476664.

It is an arithmetic number, because the mean of its divisors is an integer number (1844762221440).

It is a 1-persistent number, because it is pandigital, but 2⋅25749716990389 = 51499433980778 is not.

Almost surely, 2^{25749716990389} is an apocalyptic number.

It is an amenable number.

25749716990389 is a deficient number, since it is larger than the sum of its proper divisors (3766478552651).

25749716990389 is a wasteful number, since it uses less digits than its factorization.

25749716990389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2074920.

The product of its (nonzero) digits is 1851776640, while the sum is 79.

The spelling of 25749716990389 in words is "twenty-five trillion, seven hundred forty-nine billion, seven hundred sixteen million, nine hundred ninety thousand, three hundred eighty-nine".