3825005000644 has 9 divisors (see below), whose sum is σ = 6693765596301. Its totient is φ = 1912500544560.

The previous prime is 3825005000623. The next prime is 3825005000651. The reversal of 3825005000644 is 4460005005283.

The square root of 3825005000644 is 1955762.

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

It can be written as a sum of positive squares in only one way, i.e., 3129849263044 + 695155737600 = 1769138^2 + 833760^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3422584 + ... + 4400464.

Almost surely, 2^{3825005000644} is an apocalyptic number.

3825005000644 is the 1955762-nd square number.

It is an amenable number.

3825005000644 is a deficient number, since it is larger than the sum of its proper divisors (2868760595657).

3825005000644 is an frugal number, since it uses more digits than its factorization.

3825005000644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1955766 (or 977883 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 37.

The spelling of 3825005000644 in words is "three trillion, eight hundred twenty-five billion, five million, six hundred forty-four", and thus it is an aban number.