1139225 has 6 divisors (see below), whose sum is σ = 1412670. Its totient is φ = 911360.

The previous prime is 1139197. The next prime is 1139227. The reversal of 1139225 is 5229311.

It can be written as a sum of positive squares in 3 ways, for example, as 287296 + 851929 = 536^2 + 923^2 .

It is not a de Polignac number, because 1139225 - 2¹² = 1135129 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1139225.

It is not an unprimeable number, because it can be changed into a prime (1139227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22760 + ... + 22809.

It is an arithmetic number, because the mean of its divisors is an integer number (235445).

2^1139225 is an apocalyptic number.

It is an amenable number.

1139225 is a deficient number, since it is larger than the sum of its proper divisors (273445).

1139225 is an equidigital number, since it uses as much as digits as its factorization.

1139225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45579 (or 45574 counting only the distinct ones).

The product of its digits is 540, while the sum is 23.

The square root of 1139225 is about 1067.3448364985. The cubic root of 1139225 is about 104.4407148292.

The spelling of 1139225 in words is "one million, one hundred thirty-nine thousand, two hundred twenty-five".