4223525 has 12 divisors (see below), whose sum is σ = 5266404. Its totient is φ = 3360000.

The previous prime is 4223521. The next prime is 4223537. The reversal of 4223525 is 5253224.

It can be written as a sum of positive squares in 6 ways, for example, as 155236 + 4068289 = 394^2 + 2017^2 .

It is not a de Polignac number, because 4223525 - 2² = 4223521 is a prime.

It is a d-powerful number, because it can be written as 4³ + 2⁵ + 2¹³ + 3⁹ + 5⁴ + 2²² + 5⁴ .

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 4223525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4223521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5675 + ... + 6375.

It is an arithmetic number, because the mean of its divisors is an integer number (438867).

Almost surely, 2^4223525 is an apocalyptic number.

It is an amenable number.

4223525 is a deficient number, since it is larger than the sum of its proper divisors (1042879).

4223525 is a wasteful number, since it uses less digits than its factorization.

4223525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952 (or 947 counting only the distinct ones).

The product of its digits is 2400, while the sum is 23.

The square root of 4223525 is about 2055.1216509005. The cubic root of 4223525 is about 161.6435412890.

Adding to 4223525 its reverse (5253224), we get a palindrome (9476749).

The spelling of 4223525 in words is "four million, two hundred twenty-three thousand, five hundred twenty-five".