2143445325 has 48 divisors (see below), whose sum is σ = 4226205696. Its totient is φ = 937252800.

The previous prime is 2143445243. The next prime is 2143445327. The reversal of 2143445325 is 5235443412.

It is not a de Polignac number, because 2143445325 - 2¹⁸ = 2143183181 is a prime.

It is a super-2 number, since 2×2143445325² = 9188715722528711250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143445327) 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 47 ways as a sum of consecutive naturals, for example, 76681 + ... + 100830.

It is an arithmetic number, because the mean of its divisors is an integer number (88045952).

Almost surely, 2^2143445325 is an apocalyptic number.

2143445325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2143445325 is a deficient number, since it is larger than the sum of its proper divisors (2082760371).

2143445325 is a wasteful number, since it uses less digits than its factorization.

2143445325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177554 (or 177549 counting only the distinct ones).

The product of its digits is 57600, while the sum is 33.

The square root of 2143445325 is about 46297.3576459823. The cubic root of 2143445325 is about 1289.3499368792.

Adding to 2143445325 its reverse (5235443412), we get a palindrome (7378888737).

The spelling of 2143445325 in words is "two billion, one hundred forty-three million, four hundred forty-five thousand, three hundred twenty-five".