25890716664279 has 24 divisors (see below), whose sum is σ = 38689204554000. Its totient is φ = 16664458890240.

The previous prime is 25890716664167. The next prime is 25890716664287. The reversal of 25890716664279 is 97246661709852.

It is not a de Polignac number, because 25890716664279 - 2¹⁹ = 25890716139991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25890716664289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2801872 + ... + 7722170.

It is an arithmetic number, because the mean of its divisors is an integer number (1612050189750).

Almost surely, 2^{25890716664279} is an apocalyptic number.

25890716664279 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

25890716664279 is a deficient number, since it is larger than the sum of its proper divisors (12798487889721).

25890716664279 is a wasteful number, since it uses less digits than its factorization.

25890716664279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4940495 (or 4940492 counting only the distinct ones).

The product of its (nonzero) digits is 548674560, while the sum is 72.

The spelling of 25890716664279 in words is "twenty-five trillion, eight hundred ninety billion, seven hundred sixteen million, six hundred sixty-four thousand, two hundred seventy-nine".