3630644430625 has 45 divisors (see below), whose sum is σ = 4571702581413. Its totient is φ = 2882374506000.

The previous prime is 3630644430557. The next prime is 3630644430641. The reversal of 3630644430625 is 5260344460363.

The square root of 3630644430625 is 1905425.

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

It can be written as a sum of positive squares in 2 ways, for example, as 284642523361 + 3346001907264 = 533519^2 + 1829208^2 .

It is not a de Polignac number, because 3630644430625 - 2¹¹ = 3630644428577 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 9479489184 + ... + 9479489566.

Almost surely, 2^{3630644430625} is an apocalyptic number.

3630644430625 is the 1905425-th square number.

3630644430625 is the 952713-rd centered octagonal number.

It is an amenable number.

3630644430625 is a deficient number, since it is larger than the sum of its proper divisors (941058150788).

3630644430625 is an frugal number, since it uses more digits than its factorization.

3630644430625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184 (or 587 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 46.

Adding to 3630644430625 its reverse (5260344460363), we get a palindrome (8890988890988).

The spelling of 3630644430625 in words is "three trillion, six hundred thirty billion, six hundred forty-four million, four hundred thirty thousand, six hundred twenty-five".