2125135445 has 8 divisors (see below), whose sum is σ = 2575412280. Its totient is φ = 1683275200.

The previous prime is 2125135423. The next prime is 2125135447. The reversal of 2125135445 is 5445315212.

It can be written as a sum of positive squares in 4 ways, for example, as 638724529 + 1486410916 = 25273^2 + 38554^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2125135445 - 2⁶ = 2125135381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2125135447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2103590 + ... + 2104599.

It is an arithmetic number, because the mean of its divisors is an integer number (321926535).

Almost surely, 2^2125135445 is an apocalyptic number.

It is an amenable number.

2125135445 is a deficient number, since it is larger than the sum of its proper divisors (450276835).

2125135445 is a wasteful number, since it uses less digits than its factorization.

2125135445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4208295.

The product of its digits is 24000, while the sum is 32.

The square root of 2125135445 is about 46099.1913703484. The cubic root of 2125135445 is about 1285.6681098261.

The spelling of 2125135445 in words is "two billion, one hundred twenty-five million, one hundred thirty-five thousand, four hundred forty-five".