4421525 has 24 divisors (see below), whose sum is σ = 5785344. Its totient is φ = 3348800.

The previous prime is 4421507. The next prime is 4421533. The reversal of 4421525 is 5251244.

It is a happy number.

It is not a de Polignac number, because 4421525 - 2¹² = 4417429 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4421525.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 62240 + ... + 62310.

It is an arithmetic number, because the mean of its divisors is an integer number (241056).

Almost surely, 2^4421525 is an apocalyptic number.

It is an amenable number.

4421525 is a deficient number, since it is larger than the sum of its proper divisors (1363819).

4421525 is a wasteful number, since it uses less digits than its factorization.

4421525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181 (or 176 counting only the distinct ones).

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

The square root of 4421525 is about 2102.7422571490. The cubic root of 4421525 is about 164.1310300251.

Adding to 4421525 its reverse (5251244), we get a palindrome (9672769).

The spelling of 4421525 in words is "four million, four hundred twenty-one thousand, five hundred twenty-five".