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BaseRepresentation
bin100101010101000111001
32022010221122
410222220321
5303120400
642115025
713253153
oct4525071
92263848
101223225
11766033
124aba75
1333aa03
15192685
hex12aa39

1223225 has 12 divisors (see below), whose sum is σ = 1533756. Its totient is φ = 967680.

The previous prime is 1223207. The next prime is 1223231. The reversal of 1223225 is 5223221.

Adding to 1223225 its reverse (5223221), we get a palindrome (6446446).

It can be written as a sum of positive squares in 6 ways, for example, as 495616 + 727609 = 704^2 + 853^2 .

It is not a de Polignac number, because 1223225 - 26 = 1223161 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2609 + ... + 3041.

It is an arithmetic number, because the mean of its divisors is an integer number (127813).

21223225 is an apocalyptic number.

It is an amenable number.

1223225 is a deficient number, since it is larger than the sum of its proper divisors (310531).

1223225 is a wasteful number, since it uses less digits than its factorization.

1223225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556 (or 551 counting only the distinct ones).

The product of its digits is 240, while the sum is 17.

The square root of 1223225 is about 1105.9950271136. The cubic root of 1223225 is about 106.9470434080.

The spelling of 1223225 in words is "one million, two hundred twenty-three thousand, two hundred twenty-five".