2163725445 has 32 divisors (see below), whose sum is σ = 4084162560. Its totient is φ = 957222720.

The previous prime is 2163725419. The next prime is 2163725503. The reversal of 2163725445 is 5445273612.

It is not a de Polignac number, because 2163725445 - 2⁶ = 2163725381 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 329115 + ... + 335624.

It is an arithmetic number, because the mean of its divisors is an integer number (127630080).

Almost surely, 2^2163725445 is an apocalyptic number.

It is an amenable number.

2163725445 is a deficient number, since it is larger than the sum of its proper divisors (1920437115).

2163725445 is a wasteful number, since it uses less digits than its factorization.

2163725445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664785.

The product of its digits is 201600, while the sum is 39.

The square root of 2163725445 is about 46515.8622944905. The cubic root of 2163725445 is about 1293.4035564234.

The spelling of 2163725445 in words is "two billion, one hundred sixty-three million, seven hundred twenty-five thousand, four hundred forty-five".