2211225 has 12 divisors (see below), whose sum is σ = 3656016. Its totient is φ = 1179280.

The previous prime is 2211217. The next prime is 2211227. The reversal of 2211225 is 5221122.

It is not a de Polignac number, because 2211225 - 2³ = 2211217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (2211227) 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, 14667 + ... + 14816.

It is an arithmetic number, because the mean of its divisors is an integer number (304668).

2^2211225 is an apocalyptic number.

2211225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2211225 is a deficient number, since it is larger than the sum of its proper divisors (1444791).

2211225 is a wasteful number, since it uses less digits than its factorization.

2211225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29496 (or 29491 counting only the distinct ones).

The product of its digits is 80, while the sum is 15.

The square root of 2211225 is about 1487.0188297396. The cubic root of 2211225 is about 130.2799686175.

Adding to 2211225 its reverse (5221122), we get a palindrome (7432347).

The spelling of 2211225 in words is "two million, two hundred eleven thousand, two hundred twenty-five".