15625000868 has 6 divisors (see below), whose sum is σ = 27343751526. Its totient is φ = 7812500432.

The previous prime is 15625000843. The next prime is 15625000891. The reversal of 15625000868 is 86800052651.

15625000868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 14027559844 + 1597441024 = 118438^2 + 39968^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1953125105 + ... + 1953125112.

It is an arithmetic number, because the mean of its divisors is an integer number (4557291921).

Almost surely, 2^15625000868 is an apocalyptic number.

It is an amenable number.

15625000868 is a deficient number, since it is larger than the sum of its proper divisors (11718750658).

15625000868 is a wasteful number, since it uses less digits than its factorization.

15625000868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3906250221 (or 3906250219 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 41.

The spelling of 15625000868 in words is "fifteen billion, six hundred twenty-five million, eight hundred sixty-eight", and thus it is an aban number.