299646225 has 18 divisors (see below), whose sum is σ = 536700086. Its totient is φ = 159811200.

The previous prime is 299646223. The next prime is 299646229. The reversal of 299646225 is 522646992.

It can be written as a sum of positive squares in 3 ways, for example, as 73564929 + 226081296 = 8577^2 + 15036^2 .

It is not a de Polignac number, because 299646225 - 2¹ = 299646223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (299646223) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 665656 + ... + 666105.

Almost surely, 2^299646225 is an apocalyptic number.

299646225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

299646225 is a deficient number, since it is larger than the sum of its proper divisors (237053861).

299646225 is a wasteful number, since it uses less digits than its factorization.

299646225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331777 (or 1331769 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 299646225 is about 17310.2924585346. The cubic root of 299646225 is about 669.1697036418.

The spelling of 299646225 in words is "two hundred ninety-nine million, six hundred forty-six thousand, two hundred twenty-five".