1222625 has 8 divisors (see below), whose sum is σ = 1525992. Its totient is φ = 978000.

The previous prime is 1222603. The next prime is 1222633. The reversal of 1222625 is 5262221.

It can be written as a sum of positive squares in 4 ways, for example, as 73441 + 1149184 = 271^2 + 1072^2 .

It is not a de Polignac number, because 1222625 - 2⁶ = 1222561 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222597 and 1222606.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4766 + ... + 5015.

It is an arithmetic number, because the mean of its divisors is an integer number (190749).

2^1222625 is an apocalyptic number.

It is an amenable number.

1222625 is a deficient number, since it is larger than the sum of its proper divisors (303367).

1222625 is an frugal number, since it uses more digits than its factorization.

1222625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9796 (or 9786 counting only the distinct ones).

The product of its digits is 480, while the sum is 20.

The square root of 1222625 is about 1105.7237448839. The cubic root of 1222625 is about 106.9295544695.

Adding to 1222625 its reverse (5262221), we get a palindrome (6484846).

The spelling of 1222625 in words is "one million, two hundred twenty-two thousand, six hundred twenty-five".