2205172519 has 4 divisors (see below), whose sum is σ = 2405642760. Its totient is φ = 2004702280.

The previous prime is 2205172517. The next prime is 2205172559. The reversal of 2205172519 is 9152715022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2205172519 - 2¹ = 2205172517 is a prime.

It is a super-4 number, since 4×2205172519⁴ (a number of 38 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2205172517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100235104 + ... + 100235125.

It is an arithmetic number, because the mean of its divisors is an integer number (601410690).

Almost surely, 2^2205172519 is an apocalyptic number.

2205172519 is a deficient number, since it is larger than the sum of its proper divisors (200470241).

2205172519 is a wasteful number, since it uses less digits than its factorization.

2205172519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200470240.

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 2205172519 is about 46959.2644640011. The cubic root of 2205172519 is about 1301.6099420837.

It can be divided in two parts, 2205 and 172519, that added together give a square (174724 = 418²).

The spelling of 2205172519 in words is "two billion, two hundred five million, one hundred seventy-two thousand, five hundred nineteen".