2125303445 has 18 divisors (see below), whose sum is σ = 2606091558. Its totient is φ = 1663874368.

The previous prime is 2125303409. The next prime is 2125303451. The reversal of 2125303445 is 5443035212.

It is a happy number.

It can be written as a sum of positive squares in 9 ways, for example, as 511754884 + 1613548561 = 22622^2 + 40169^2 .

It is not a de Polignac number, because 2125303445 - 2¹² = 2125299349 is a prime.

It is a super-3 number, since 3×2125303445³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 5463311 + ... + 5463699.

Almost surely, 2^2125303445 is an apocalyptic number.

It is an amenable number.

2125303445 is a deficient number, since it is larger than the sum of its proper divisors (480788113).

2125303445 is an frugal number, since it uses more digits than its factorization.

2125303445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889 (or 447 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 2125303445 is about 46101.0134921132. The cubic root of 2125303445 is about 1285.7019879100.

Adding to 2125303445 its reverse (5443035212), we get a palindrome (7568338657).

The spelling of 2125303445 in words is "two billion, one hundred twenty-five million, three hundred three thousand, four hundred forty-five".