1188225 has 18 divisors (see below), whose sum is σ = 2128646. Its totient is φ = 633600.

The previous prime is 1188223. The next prime is 1188227. The reversal of 1188225 is 5228811.

It is an interprime number because it is at equal distance from previous prime (1188223) and next prime (1188227).

It can be written as a sum of positive squares in 3 ways, for example, as 2304 + 1185921 = 48^2 + 1089^2 .

It is not a de Polignac number, because 1188225 - 2¹ = 1188223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1188223) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2416 + ... + 2865.

2^1188225 is an apocalyptic number.

1188225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1188225 is a deficient number, since it is larger than the sum of its proper divisors (940421).

1188225 is a wasteful number, since it uses less digits than its factorization.

1188225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5297 (or 5289 counting only the distinct ones).

The product of its digits is 1280, while the sum is 27.

The square root of 1188225 is about 1090.0573379414. The cubic root of 1188225 is about 105.9171359035.

The spelling of 1188225 in words is "one million, one hundred eighty-eight thousand, two hundred twenty-five".