1650225 has 12 divisors (see below), whose sum is σ = 2728496. Its totient is φ = 880080.

The previous prime is 1650221. The next prime is 1650263. The reversal of 1650225 is 5220561.

It is not a de Polignac number, because 1650225 - 2² = 1650221 is a prime.

It is a Duffinian number.

1650225 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1650221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10927 + ... + 11076.

2^1650225 is an apocalyptic number.

1650225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1650225 is a deficient number, since it is larger than the sum of its proper divisors (1078271).

1650225 is a wasteful number, since it uses less digits than its factorization.

1650225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22016 (or 22011 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 1650225 is about 1284.6108360122. The cubic root of 1650225 is about 118.1719460106.

Adding to 1650225 its reverse (5220561), we get a palindrome (6870786).

The spelling of 1650225 in words is "one million, six hundred fifty thousand, two hundred twenty-five".