25999262668 has 24 divisors (see below), whose sum is σ = 45589408704. Its totient is φ = 12973747200.

The previous prime is 25999262623. The next prime is 25999262669. The reversal of 25999262668 is 86626299952.

It is not an unprimeable number, because it can be changed into a prime (25999262669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4967613 + ... + 4972843.

It is an arithmetic number, because the mean of its divisors is an integer number (1899558696).

Almost surely, 2^25999262668 is an apocalyptic number.

It is an amenable number.

25999262668 is a deficient number, since it is larger than the sum of its proper divisors (19590146036).

25999262668 is a wasteful number, since it uses less digits than its factorization.

25999262668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7473 (or 7471 counting only the distinct ones).

The product of its digits is 50388480, while the sum is 64.

The spelling of 25999262668 in words is "twenty-five billion, nine hundred ninety-nine million, two hundred sixty-two thousand, six hundred sixty-eight".