1225773 has 20 divisors (see below), whose sum is σ = 1885180. Its totient is φ = 793152.

The previous prime is 1225769. The next prime is 1225787. The reversal of 1225773 is 3775221.

It can be written as a sum of positive squares in 2 ways, for example, as 1108809 + 116964 = 1053^2 + 342^2 .

It is not a de Polignac number, because 1225773 - 2² = 1225769 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225703) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2793 + ... + 3201.

It is an arithmetic number, because the mean of its divisors is an integer number (94259).

2^1225773 is an apocalyptic number.

It is an amenable number.

1225773 is a deficient number, since it is larger than the sum of its proper divisors (659407).

1225773 is an equidigital number, since it uses as much as digits as its factorization.

1225773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458 (or 449 counting only the distinct ones).

The product of its digits is 2940, while the sum is 27.

The square root of 1225773 is about 1107.1463317918. The cubic root of 1225773 is about 107.0212494554.

The spelling of 1225773 in words is "one million, two hundred twenty-five thousand, seven hundred seventy-three".