2425643 has 4 divisors (see below), whose sum is σ = 2646168. Its totient is φ = 2205120.

The previous prime is 2425637. The next prime is 2425663. The reversal of 2425643 is 3465242.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2425643 - 2⁴ = 2425627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2425613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110246 + ... + 110267.

It is an arithmetic number, because the mean of its divisors is an integer number (661542).

2^2425643 is an apocalyptic number.

2425643 is a deficient number, since it is larger than the sum of its proper divisors (220525).

2425643 is a wasteful number, since it uses less digits than its factorization.

2425643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220524.

The product of its digits is 5760, while the sum is 26.

The square root of 2425643 is about 1557.4475914136. The cubic root of 2425643 is about 134.3617425536.

It can be divided in two parts, 242 and 5643, that added together give a palindrome (5885).

The spelling of 2425643 in words is "two million, four hundred twenty-five thousand, six hundred forty-three".