2175625 has 15 divisors (see below), whose sum is σ = 2765521. Its totient is φ = 1711000.

The previous prime is 2175601. The next prime is 2175629. The reversal of 2175625 is 5265712.

The square root of 2175625 is 1475.

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

It can be written as a sum of positive squares in 2 ways, for example, as 170569 + 2005056 = 413^2 + 1416^2 .

It is not a de Polignac number, because 2175625 - 2⁷ = 2175497 is a prime.

It is a Duffinian number.

2175625 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2175593 and 2175602.

It is not an unprimeable number, because it can be changed into a prime (2175629) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 36846 + ... + 36904.

2^2175625 is an apocalyptic number.

2175625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2175625 is the 1475-th square number.

2175625 is the 738-th centered octagonal number.

It is an amenable number.

2175625 is a deficient number, since it is larger than the sum of its proper divisors (589896).

2175625 is an frugal number, since it uses more digits than its factorization.

2175625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 64 counting only the distinct ones).

The product of its digits is 4200, while the sum is 28.

The cubic root of 2175625 is about 129.5770276625.

The spelling of 2175625 in words is "two million, one hundred seventy-five thousand, six hundred twenty-five".