2186225 has 12 divisors (see below), whose sum is σ = 2733084. Its totient is φ = 1734720.

The previous prime is 2186221. The next prime is 2186227. The reversal of 2186225 is 5226812.

It can be written as a sum of positive squares in 6 ways, for example, as 485809 + 1700416 = 697^2 + 1304^2 .

It is not a de Polignac number, because 2186225 - 2² = 2186221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2186194 and 2186203.

It is not an unprimeable number, because it can be changed into a prime (2186221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3647 + ... + 4203.

It is an arithmetic number, because the mean of its divisors is an integer number (227757).

2^2186225 is an apocalyptic number.

2186225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2186225 is a deficient number, since it is larger than the sum of its proper divisors (546859).

2186225 is a wasteful number, since it uses less digits than its factorization.

2186225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724 (or 719 counting only the distinct ones).

The product of its digits is 1920, while the sum is 26.

The square root of 2186225 is about 1478.5888542796. The cubic root of 2186225 is about 129.7871269590.

The spelling of 2186225 in words is "two million, one hundred eighty-six thousand, two hundred twenty-five".