1225106 has 4 divisors (see below), whose sum is σ = 1837662. Its totient is φ = 612552.

The previous prime is 1225099. The next prime is 1225109. The reversal of 1225106 is 6015221.

1225106 = 314² + 315² + ... + 325².

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1018081 + 207025 = 1009^2 + 455^2 .

It is a super-2 number, since 2×1225106² = 3001769422472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1225109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306275 + ... + 306278.

2^1225106 is an apocalyptic number.

1225106 is a deficient number, since it is larger than the sum of its proper divisors (612556).

1225106 is an equidigital number, since it uses as much as digits as its factorization.

1225106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612555.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1225106 is about 1106.8450659419. The cubic root of 1225106 is about 107.0018341899.

It can be divided in two parts, 1225 and 106, that added together give a palindrome (1331).

The spelling of 1225106 in words is "one million, two hundred twenty-five thousand, one hundred six".