1642325 has 12 divisors (see below), whose sum is σ = 2053440. Its totient is φ = 1302960.

The previous prime is 1642313. The next prime is 1642327. The reversal of 1642325 is 5232461.

It is not a de Polignac number, because 1642325 - 2⁴ = 1642309 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1642325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642327) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 4292 + ... + 4658.

It is an arithmetic number, because the mean of its divisors is an integer number (171120).

2^1642325 is an apocalyptic number.

It is an amenable number.

1642325 is a deficient number, since it is larger than the sum of its proper divisors (411115).

1642325 is a wasteful number, since it uses less digits than its factorization.

1642325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556 (or 551 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 1642325 is about 1281.5322859764. The cubic root of 1642325 is about 117.9830723587.

Adding to 1642325 its reverse (5232461), we get a palindrome (6874786).

The spelling of 1642325 in words is "one million, six hundred forty-two thousand, three hundred twenty-five".