2142225445 has 16 divisors (see below), whose sum is σ = 2641917168. Its totient is φ = 1666344960.

The previous prime is 2142225443. The next prime is 2142225479. The reversal of 2142225445 is 5445222412.

It can be written as a sum of positive squares in 8 ways, for example, as 248409121 + 1893816324 = 15761^2 + 43518^2 .

It is not a de Polignac number, because 2142225445 - 2¹ = 2142225443 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142225443) 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 15 ways as a sum of consecutive naturals, for example, 370275 + ... + 376015.

It is an arithmetic number, because the mean of its divisors is an integer number (165119823).

Almost surely, 2^2142225445 is an apocalyptic number.

It is an amenable number.

2142225445 is a deficient number, since it is larger than the sum of its proper divisors (499691723).

2142225445 is a wasteful number, since it uses less digits than its factorization.

2142225445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7800.

The product of its digits is 25600, while the sum is 31.

The square root of 2142225445 is about 46284.1813690163. The cubic root of 2142225445 is about 1289.1052917032.

Adding to 2142225445 its reverse (5445222412), we get a palindrome (7587447857).

The spelling of 2142225445 in words is "two billion, one hundred forty-two million, two hundred twenty-five thousand, four hundred forty-five".