2144405125425 has 24 divisors (see below), whose sum is σ = 3667672218240. Its totient is φ = 1104245396800.

The previous prime is 2144405125399. The next prime is 2144405125427. The reversal of 2144405125425 is 5245215044412.

It is not a de Polignac number, because 2144405125425 - 2⁵ = 2144405125393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2144405125427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 492964521 + ... + 492968870.

It is an arithmetic number, because the mean of its divisors is an integer number (152819675760).

Almost surely, 2^{2144405125425} is an apocalyptic number.

2144405125425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2144405125425 is a deficient number, since it is larger than the sum of its proper divisors (1523267092815).

2144405125425 is a wasteful number, since it uses less digits than its factorization.

2144405125425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985933433 (or 985933428 counting only the distinct ones).

The product of its (nonzero) digits is 256000, while the sum is 39.

The spelling of 2144405125425 in words is "two trillion, one hundred forty-four billion, four hundred five million, one hundred twenty-five thousand, four hundred twenty-five".