1222125 has 16 divisors (see below), whose sum is σ = 2034240. Its totient is φ = 651600.

The previous prime is 1222097. The next prime is 1222129. The reversal of 1222125 is 5212221.

It is not a de Polignac number, because 1222125 - 2¹¹ = 1220077 is a prime.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1255 + ... + 2004.

It is an arithmetic number, because the mean of its divisors is an integer number (127140).

2^1222125 is an apocalyptic number.

1222125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1222125 is a deficient number, since it is larger than the sum of its proper divisors (812115).

1222125 is an equidigital number, since it uses as much as digits as its factorization.

1222125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3277 (or 3267 counting only the distinct ones).

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

The square root of 1222125 is about 1105.4976255063. The cubic root of 1222125 is about 106.9149759827.

Adding to 1222125 its reverse (5212221), we get a palindrome (6434346).

It can be divided in two parts, 12221 and 25, that added together give a triangular number (12246 = T₁₅₆).

The spelling of 1222125 in words is "one million, two hundred twenty-two thousand, one hundred twenty-five".