1441664625 has 16 divisors (see below), whose sum is σ = 2398930560. Its totient is φ = 768887600.

The previous prime is 1441664621. The next prime is 1441664657. The reversal of 1441664625 is 5264661441.

It is not a de Polignac number, because 1441664625 - 2² = 1441664621 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1441664621) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 1921845 + ... + 1922594.

It is an arithmetic number, because the mean of its divisors is an integer number (149933160).

Almost surely, 2^1441664625 is an apocalyptic number.

1441664625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1441664625 is a deficient number, since it is larger than the sum of its proper divisors (957265935).

1441664625 is an equidigital number, since it uses as much as digits as its factorization.

1441664625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3844457 (or 3844447 counting only the distinct ones).

The product of its digits is 138240, while the sum is 39.

The square root of 1441664625 is about 37969.2589472062. The cubic root of 1441664625 is about 1129.6781982346.

The spelling of 1441664625 in words is "one billion, four hundred forty-one million, six hundred sixty-four thousand, six hundred twenty-five".