4521825 has 120 divisors (see below), whose sum is σ = 10802880. Its totient is φ = 1814400.

The previous prime is 4521821. The next prime is 4521827. The reversal of 4521825 is 5281254.

It is a happy number.

It is not a de Polignac number, because 4521825 - 2² = 4521821 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

4521825 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4521821) 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 119 ways as a sum of consecutive naturals, for example, 155911 + ... + 155939.

It is an arithmetic number, because the mean of its divisors is an integer number (90024).

Almost surely, 2^4521825 is an apocalyptic number.

4521825 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4521825 is an abundant number, since it is smaller than the sum of its proper divisors (6281055).

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

4521825 is a wasteful number, since it uses less digits than its factorization.

4521825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69 (or 55 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 4521825 is about 2126.4583231279. The cubic root of 4521825 is about 165.3628378919.

The spelling of 4521825 in words is "four million, five hundred twenty-one thousand, eight hundred twenty-five".