1145225 has 12 divisors (see below), whose sum is σ = 1495440. Its totient is φ = 867600.

The previous prime is 1145213. The next prime is 1145227. The reversal of 1145225 is 5225411.

It is a de Polignac number, because none of the positive numbers 2^k-1145225 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1145197 and 1145206.

It is not an unprimeable number, because it can be changed into a prime (1145227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 731 + ... + 1680.

It is an arithmetic number, because the mean of its divisors is an integer number (124620).

2^1145225 is an apocalyptic number.

It is an amenable number.

1145225 is a deficient number, since it is larger than the sum of its proper divisors (350215).

1145225 is a wasteful number, since it uses less digits than its factorization.

1145225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2440 (or 2435 counting only the distinct ones).

The product of its digits is 400, while the sum is 20.

The square root of 1145225 is about 1070.1518583827. The cubic root of 1145225 is about 104.6237478481.

The spelling of 1145225 in words is "one million, one hundred forty-five thousand, two hundred twenty-five".