1181225 has 12 divisors (see below), whose sum is σ = 1505484. Its totient is φ = 918720.

The previous prime is 1181209. The next prime is 1181237. The reversal of 1181225 is 5221811.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 32041 + 1149184 = 179^2 + 1072^2 .

It is not a de Polignac number, because 1181225 - 2⁴ = 1181209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1181197 and 1181206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 287 + ... + 1563.

It is an arithmetic number, because the mean of its divisors is an integer number (125457).

2^1181225 is an apocalyptic number.

It is an amenable number.

1181225 is a deficient number, since it is larger than the sum of its proper divisors (324259).

1181225 is a wasteful number, since it uses less digits than its factorization.

1181225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324 (or 1319 counting only the distinct ones).

The product of its digits is 160, while the sum is 20.

The square root of 1181225 is about 1086.8417548107. The cubic root of 1181225 is about 105.7087352298.

The spelling of 1181225 in words is "one million, one hundred eighty-one thousand, two hundred twenty-five".