4425821 has 8 divisors (see below), whose sum is σ = 4640064. Its totient is φ = 4213440.

The previous prime is 4425791. The next prime is 4425833. The reversal of 4425821 is 1285244.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4425821 - 2¹⁴ = 4409437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4425851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7466 + ... + 8036.

It is an arithmetic number, because the mean of its divisors is an integer number (580008).

Almost surely, 2^4425821 is an apocalyptic number.

It is an amenable number.

4425821 is a deficient number, since it is larger than the sum of its proper divisors (214243).

4425821 is a wasteful number, since it uses less digits than its factorization.

4425821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931.

The product of its digits is 2560, while the sum is 26.

The square root of 4425821 is about 2103.7635323391. The cubic root of 4425821 is about 164.1841699610.

The spelling of 4425821 in words is "four million, four hundred twenty-five thousand, eight hundred twenty-one".