2099225 has 6 divisors (see below), whose sum is σ = 2603070. Its totient is φ = 1679360.

The previous prime is 2099221. The next prime is 2099249. The reversal of 2099225 is 5229902.

It can be written as a sum of positive squares in 3 ways, for example, as 491401 + 1607824 = 701^2 + 1268^2 .

It is not a de Polignac number, because 2099225 - 2² = 2099221 is a prime.

It is a d-powerful number, because it can be written as 2 + 0 + 9 + 9 + 2¹¹ + 2²¹ + 5 .

It is not an unprimeable number, because it can be changed into a prime (2099221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41960 + ... + 42009.

It is an arithmetic number, because the mean of its divisors is an integer number (433845).

2^2099225 is an apocalyptic number.

2099225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2099225 is a deficient number, since it is larger than the sum of its proper divisors (503845).

2099225 is an equidigital number, since it uses as much as digits as its factorization.

2099225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83979 (or 83974 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 2099225 is about 1448.8702495393. The cubic root of 2099225 is about 128.0421614041.

It can be divided in two parts, 20992 and 25, that multiplied together give a triangular number (524800 = T₁₀₂₄).

The spelling of 2099225 in words is "two million, ninety-nine thousand, two hundred twenty-five".