1642225 has 24 divisors (see below), whose sum is σ = 2277632. Its totient is φ = 1166400.

The previous prime is 1642211. The next prime is 1642231. The reversal of 1642225 is 5222461.

It is not a de Polignac number, because 1642225 - 2⁹ = 1641713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1642196 and 1642205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9994 + ... + 10156.

2^1642225 is an apocalyptic number.

It is an amenable number.

1642225 is a deficient number, since it is larger than the sum of its proper divisors (635407).

1642225 is a wasteful number, since it uses less digits than its factorization.

1642225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 212 counting only the distinct ones).

The product of its digits is 960, while the sum is 22.

The square root of 1642225 is about 1281.4932695883. The cubic root of 1642225 is about 117.9806776750.

Adding to 1642225 its reverse (5222461), we get a palindrome (6864686).

The spelling of 1642225 in words is "one million, six hundred forty-two thousand, two hundred twenty-five".