4825421 has 4 divisors (see below), whose sum is σ = 4831932. Its totient is φ = 4818912.

The previous prime is 4825369. The next prime is 4825427. The reversal of 4825421 is 1245284.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 373321 + 4452100 = 611^2 + 2110^2 .

It is a cyclic number.

It is not a de Polignac number, because 4825421 - 2¹⁴ = 4809037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4825427) 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, 1976 + ... + 3681.

It is an arithmetic number, because the mean of its divisors is an integer number (1207983).

Almost surely, 2^4825421 is an apocalyptic number.

It is an amenable number.

4825421 is a deficient number, since it is larger than the sum of its proper divisors (6511).

4825421 is an equidigital number, since it uses as much as digits as its factorization.

4825421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6510.

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

The square root of 4825421 is about 2196.6840919896. The cubic root of 4825421 is about 168.9837992009.

The spelling of 4825421 in words is "four million, eight hundred twenty-five thousand, four hundred twenty-one".