2729225 has 6 divisors (see below), whose sum is σ = 3384270. Its totient is φ = 2183360.

The previous prime is 2729189. The next prime is 2729227. The reversal of 2729225 is 5229272.

It can be written as a sum of positive squares in 3 ways, for example, as 121 + 2729104 = 11^2 + 1652^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2729225 is a prime.

It is a d-powerful number, because it can be written as 2¹⁵ + 7³ + 2¹⁹ + 9⁵ + 2²⁰ + 2²⁰ + 5⁶ .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2729227) 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, 54560 + ... + 54609.

It is an arithmetic number, because the mean of its divisors is an integer number (564045).

2^2729225 is an apocalyptic number.

2729225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2729225 is a deficient number, since it is larger than the sum of its proper divisors (655045).

2729225 is a wasteful number, since it uses less digits than its factorization.

2729225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109179 (or 109174 counting only the distinct ones).

The product of its digits is 5040, while the sum is 29.

The square root of 2729225 is about 1652.0366218701. The cubic root of 2729225 is about 139.7482721403.

The spelling of 2729225 in words is "two million, seven hundred twenty-nine thousand, two hundred twenty-five".