25533016568 has 8 divisors (see below), whose sum is σ = 47874406080. Its totient is φ = 12766508280.

The previous prime is 25533016559. The next prime is 25533016571. The reversal of 25533016568 is 86561033552.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1595813528 + ... + 1595813543.

It is an arithmetic number, because the mean of its divisors is an integer number (5984300760).

Almost surely, 2^25533016568 is an apocalyptic number.

It is an amenable number.

25533016568 is a deficient number, since it is larger than the sum of its proper divisors (22341389512).

25533016568 is a wasteful number, since it uses less digits than its factorization.

25533016568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3191627077 (or 3191627073 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 25533016568 in words is "twenty-five billion, five hundred thirty-three million, sixteen thousand, five hundred sixty-eight".