25816482489 has 16 divisors (see below), whose sum is σ = 41653484928. Its totient is φ = 13884494592.

The previous prime is 25816482487. The next prime is 25816482551. The reversal of 25816482489 is 98428461852.

It is not a de Polignac number, because 25816482489 - 2¹ = 25816482487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25816482481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36157182 + ... + 36157895.

It is an arithmetic number, because the mean of its divisors is an integer number (2603342808).

Almost surely, 2^25816482489 is an apocalyptic number.

It is an amenable number.

25816482489 is a deficient number, since it is larger than the sum of its proper divisors (15837002439).

25816482489 is a wasteful number, since it uses less digits than its factorization.

25816482489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72315104.

The product of its digits is 8847360, while the sum is 57.

The spelling of 25816482489 in words is "twenty-five billion, eight hundred sixteen million, four hundred eighty-two thousand, four hundred eighty-nine".