2144644025 has 6 divisors (see below), whose sum is σ = 2659358622. Its totient is φ = 1715715200.

The previous prime is 2144644009. The next prime is 2144644043. The reversal of 2144644025 is 5204464412.

It can be written as a sum of positive squares in 3 ways, for example, as 698439184 + 1446204841 = 26428^2 + 38029^2 .

It is not a de Polignac number, because 2144644025 - 2⁴ = 2144644009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2144643982 and 2144644000.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42892856 + ... + 42892905.

It is an arithmetic number, because the mean of its divisors is an integer number (443226437).

Almost surely, 2^2144644025 is an apocalyptic number.

2144644025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2144644025 is a deficient number, since it is larger than the sum of its proper divisors (514714597).

2144644025 is an equidigital number, since it uses as much as digits as its factorization.

2144644025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85785771 (or 85785766 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 32.

The square root of 2144644025 is about 46310.3014997743. The cubic root of 2144644025 is about 1289.5902440350.

The spelling of 2144644025 in words is "two billion, one hundred forty-four million, six hundred forty-four thousand, twenty-five".