16003000140625 has 21 divisors (see below), whose sum is σ = 20004119197903. Its totient is φ = 12802000075000.

The previous prime is 16003000140613. The next prime is 16003000140637. The reversal of 16003000140625 is 52604100030061.

The square root of 16003000140625 is 4000375.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (16003000140613) and next prime (16003000140637).

It can be written as a sum of positive squares in 3 ways, for example, as 14020164411201 + 1982835729424 = 3744351^2 + 1408132^2 .

It is not a de Polignac number, because 16003000140625 - 2⁵ = 16003000140593 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16003000140593 and 16003000140602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 500030874 + ... + 500062876.

Almost surely, 2^{16003000140625} is an apocalyptic number.

16003000140625 is the 4000375-th square number.

16003000140625 is the 2000188-th centered octagonal number.

It is an amenable number.

16003000140625 is a deficient number, since it is larger than the sum of its proper divisors (4001119057278).

16003000140625 is an frugal number, since it uses more digits than its factorization.

16003000140625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64036 (or 32008 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 16003000140625 its reverse (52604100030061), we get a palindrome (68607100170686).

The spelling of 16003000140625 in words is "sixteen trillion, three billion, one hundred forty thousand, six hundred twenty-five".