2160625 has 10 divisors (see below), whose sum is σ = 2700698. Its totient is φ = 1728000.

The previous prime is 2160619. The next prime is 2160629. The reversal of 2160625 is 5260612.

It can be written as a sum of positive squares in 5 ways, for example, as 1547536 + 613089 = 1244^2 + 783^2 .

It is not a de Polignac number, because 2160625 - 2³ = 2160617 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2160596 and 2160605.

It is not an unprimeable number, because it can be changed into a prime (2160629) 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 9 ways as a sum of consecutive naturals, for example, 1104 + ... + 2353.

2^2160625 is an apocalyptic number.

2160625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2160625 is a deficient number, since it is larger than the sum of its proper divisors (540073).

2160625 is an frugal number, since it uses more digits than its factorization.

2160625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3477 (or 3462 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 2160625 is about 1469.9064596089. The cubic root of 2160625 is about 129.2785479929.

The spelling of 2160625 in words is "two million, one hundred sixty thousand, six hundred twenty-five".