2175669250225 has 27 divisors (see below), whose sum is σ = 2716568701857. Its totient is φ = 1728528778080.

The previous prime is 2175669250213. The next prime is 2175669250229. The reversal of 2175669250225 is 5220529665712.

The square root of 2175669250225 is 1475015.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 263135143089 + 1912534107136 = 512967^2 + 1382944^2 .

It is not a de Polignac number, because 2175669250225 - 2¹¹ = 2175669248177 is a prime.

It is a super-2 number, since 2×2175669250225² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2175669250229) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1157885836 + ... + 1157887714.

Almost surely, 2^{2175669250225} is an apocalyptic number.

2175669250225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2175669250225 is the 1475015-th square number.

2175669250225 is the 737508-th centered octagonal number.

It is an amenable number.

2175669250225 is a deficient number, since it is larger than the sum of its proper divisors (540899451632).

2175669250225 is an frugal number, since it uses more digits than its factorization.

2175669250225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4082 (or 2041 counting only the distinct ones).

The product of its (nonzero) digits is 4536000, while the sum is 52.

The spelling of 2175669250225 in words is "two trillion, one hundred seventy-five billion, six hundred sixty-nine million, two hundred fifty thousand, two hundred twenty-five".