4521425 has 12 divisors (see below), whose sum is σ = 5676720. Its totient is φ = 3571920.

The previous prime is 4521421. The next prime is 4521427. The reversal of 4521425 is 5241254.

It is a happy number.

It is not a de Polignac number, because 4521425 - 2² = 4521421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4521425.

It is not an unprimeable number, because it can be changed into a prime (4521421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 986 + ... + 3164.

It is an arithmetic number, because the mean of its divisors is an integer number (473060).

Almost surely, 2^4521425 is an apocalyptic number.

It is an amenable number.

4521425 is a deficient number, since it is larger than the sum of its proper divisors (1155295).

4521425 is a wasteful number, since it uses less digits than its factorization.

4521425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2272 (or 2267 counting only the distinct ones).

The product of its digits is 1600, while the sum is 23.

The square root of 4521425 is about 2126.3642679466. The cubic root of 4521425 is about 165.3579617570.

Adding to 4521425 its reverse (5241254), we get a palindrome (9762679).

The spelling of 4521425 in words is "four million, five hundred twenty-one thousand, four hundred twenty-five".