1156225 has 12 divisors (see below), whose sum is σ = 1638784. Its totient is φ = 792720.

The previous prime is 1156217. The next prime is 1156229. The reversal of 1156225 is 5226511.

It is not a de Polignac number, because 1156225 - 2³ = 1156217 is a prime.

1156225 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1156196 and 1156205.

It is not an unprimeable number, because it can be changed into a prime (1156229) by changing a digit.

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, 3129 + ... + 3478.

2^1156225 is an apocalyptic number.

It is an amenable number.

1156225 is a deficient number, since it is larger than the sum of its proper divisors (482559).

1156225 is an equidigital number, since it uses as much as digits as its factorization.

1156225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6624 (or 6619 counting only the distinct ones).

The product of its digits is 600, while the sum is 22.

The square root of 1156225 is about 1075.2790335536. The cubic root of 1156225 is about 104.9576548827.

Subtracting from 1156225 its product of digits (600), we obtain a square (1155625 = 1075²).

It can be divided in two parts, 1156 and 225, that multiplied together give a square (260100 = 510²).

The spelling of 1156225 in words is "one million, one hundred fifty-six thousand, two hundred twenty-five".