2180025 has 18 divisors (see below), whose sum is σ = 3905070. Its totient is φ = 1162560.

The previous prime is 2180021. The next prime is 2180027. The reversal of 2180025 is 5200812.

It can be written as a sum of positive squares in 3 ways, for example, as 166464 + 2013561 = 408^2 + 1419^2 .

It is not a de Polignac number, because 2180025 - 2² = 2180021 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2180021) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4620 + ... + 5069.

2^2180025 is an apocalyptic number.

2180025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2180025 is a deficient number, since it is larger than the sum of its proper divisors (1725045).

2180025 is a wasteful number, since it uses less digits than its factorization.

2180025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9705 (or 9697 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 2180025 is about 1476.4907720673. The cubic root of 2180025 is about 129.6643213523.

Adding to 2180025 its reverse (5200812), we get a palindrome (7380837).

The spelling of 2180025 in words is "two million, one hundred eighty thousand, twenty-five".