4125643 has 4 divisors (see below), whose sum is σ = 4130080. Its totient is φ = 4121208.

The previous prime is 4125637. The next prime is 4125647. The reversal of 4125643 is 3465214.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 4125643 - 2⁹ = 4125131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4125647) 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, 228 + ... + 2881.

It is an arithmetic number, because the mean of its divisors is an integer number (1032520).

Almost surely, 2^4125643 is an apocalyptic number.

4125643 is a deficient number, since it is larger than the sum of its proper divisors (4437).

4125643 is a wasteful number, since it uses less digits than its factorization.

4125643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4436.

The product of its digits is 2880, while the sum is 25.

The square root of 4125643 is about 2031.1678906481. The cubic root of 4125643 is about 160.3850491762.

The spelling of 4125643 in words is "four million, one hundred twenty-five thousand, six hundred forty-three".