4389525 has 48 divisors (see below), whose sum is σ = 9225600. Its totient is φ = 2004480.

The previous prime is 4389523. The next prime is 4389533. The reversal of 4389525 is 5259834.

It is not a de Polignac number, because 4389525 - 2¹ = 4389523 is a prime.

It is a Curzon number.

4389525 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 4389525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4389521) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4261 + ... + 5189.

It is an arithmetic number, because the mean of its divisors is an integer number (192200).

Almost surely, 2^4389525 is an apocalyptic number.

4389525 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4389525 is an abundant number, since it is smaller than the sum of its proper divisors (4836075).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4389525 is a wasteful number, since it uses less digits than its factorization.

4389525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955 (or 944 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 4389525 is about 2095.1193283439. The cubic root of 4389525 is about 163.7341145750.

The spelling of 4389525 in words is "four million, three hundred eighty-nine thousand, five hundred twenty-five".