25980389516 has 24 divisors (see below), whose sum is σ = 45924411456. Its totient is φ = 12859741440.

The previous prime is 25980389497. The next prime is 25980389527. The reversal of 25980389516 is 61598308952.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 93860 + ... + 246516.

It is an arithmetic number, because the mean of its divisors is an integer number (1913517144).

Almost surely, 2^25980389516 is an apocalyptic number.

It is an amenable number.

25980389516 is a deficient number, since it is larger than the sum of its proper divisors (19944021940).

25980389516 is a wasteful number, since it uses less digits than its factorization.

25980389516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153089 (or 153087 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 56.

The spelling of 25980389516 in words is "twenty-five billion, nine hundred eighty million, three hundred eighty-nine thousand, five hundred sixteen".