2144821625 has 16 divisors (see below), whose sum is σ = 2686240128. Its totient is φ = 1709766000.

The previous prime is 2144821607. The next prime is 2144821673. The reversal of 2144821625 is 5261284412.

It is a de Polignac number, because none of the positive numbers 2^k-2144821625 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5060 + ... + 65690.

It is an arithmetic number, because the mean of its divisors is an integer number (167890008).

Almost surely, 2^2144821625 is an apocalyptic number.

2144821625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2144821625 is a deficient number, since it is larger than the sum of its proper divisors (541418503).

2144821625 is an equidigital number, since it uses as much as digits as its factorization.

2144821625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60929 (or 60919 counting only the distinct ones).

The product of its digits is 30720, while the sum is 35.

The square root of 2144821625 is about 46312.2189600110. The cubic root of 2144821625 is about 1289.6258404484.

The spelling of 2144821625 in words is "two billion, one hundred forty-four million, eight hundred twenty-one thousand, six hundred twenty-five".