2144890825 has 96 divisors (see below), whose sum is σ = 3430637568. Its totient is φ = 1291680000.

The previous prime is 2144890823. The next prime is 2144890841. The reversal of 2144890825 is 5280984412.

It is not a de Polignac number, because 2144890825 - 2¹ = 2144890823 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2144890823) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 13661647 + ... + 13661803.

It is an arithmetic number, because the mean of its divisors is an integer number (35735808).

Almost surely, 2^2144890825 is an apocalyptic number.

2144890825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2144890825 is a deficient number, since it is larger than the sum of its proper divisors (1285746743).

2144890825 is a wasteful number, since it uses less digits than its factorization.

2144890825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383 (or 378 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 43.

The square root of 2144890825 is about 46312.9660570342. The cubic root of 2144890825 is about 1289.6397096900.

The spelling of 2144890825 in words is "two billion, one hundred forty-four million, eight hundred ninety thousand, eight hundred twenty-five".