1745225 has 6 divisors (see below), whose sum is σ = 2164110. Its totient is φ = 1396160.

The previous prime is 1745213. The next prime is 1745231. The reversal of 1745225 is 5225471.

1745225 = 114² + 115² + ... + 188².

It can be written as a sum of positive squares in 3 ways, for example, as 350464 + 1394761 = 592^2 + 1181^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1745225 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1745194 and 1745203.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34880 + ... + 34929.

It is an arithmetic number, because the mean of its divisors is an integer number (360685).

2^1745225 is an apocalyptic number.

It is an amenable number.

1745225 is a deficient number, since it is larger than the sum of its proper divisors (418885).

1745225 is an equidigital number, since it uses as much as digits as its factorization.

1745225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69819 (or 69814 counting only the distinct ones).

The product of its digits is 2800, while the sum is 26.

The square root of 1745225 is about 1321.0696423732. The cubic root of 1745225 is about 120.3974092812.

The spelling of 1745225 in words is "one million, seven hundred forty-five thousand, two hundred twenty-five".