2421425 has 6 divisors (see below), whose sum is σ = 3002598. Its totient is φ = 1937120.

The previous prime is 2421421. The next prime is 2421439. The reversal of 2421425 is 5241242.

It is a happy number.

2421425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 289 + 2421136 = 17^2 + 1556^2 .

It is not a de Polignac number, because 2421425 - 2² = 2421421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2421397 and 2421406.

It is not an unprimeable number, because it can be changed into a prime (2421421) 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 5 ways as a sum of consecutive naturals, for example, 48404 + ... + 48453.

It is an arithmetic number, because the mean of its divisors is an integer number (500433).

2^2421425 is an apocalyptic number.

2421425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2421425 is a deficient number, since it is larger than the sum of its proper divisors (581173).

2421425 is an equidigital number, since it uses as much as digits as its factorization.

2421425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96867 (or 96862 counting only the distinct ones).

The product of its digits is 640, while the sum is 20.

The square root of 2421425 is about 1556.0928635528. The cubic root of 2421425 is about 134.2838159101.

Adding to 2421425 its reverse (5241242), we get a palindrome (7662667).

The spelling of 2421425 in words is "two million, four hundred twenty-one thousand, four hundred twenty-five".