4042525 has 12 divisors (see below), whose sum is σ = 5065524. Its totient is φ = 3200000.

The previous prime is 4042523. The next prime is 4042543. The reversal of 4042525 is 5252404.

It can be written as a sum of positive squares in 6 ways, for example, as 994009 + 3048516 = 997^2 + 1746^2 .

It is not a de Polignac number, because 4042525 - 2¹ = 4042523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4042496 and 4042505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4042523) 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, 1725 + ... + 3325.

It is an arithmetic number, because the mean of its divisors is an integer number (422127).

Almost surely, 2^4042525 is an apocalyptic number.

It is an amenable number.

4042525 is a deficient number, since it is larger than the sum of its proper divisors (1022999).

4042525 is a wasteful number, since it uses less digits than its factorization.

4042525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1712 (or 1707 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 4042525 is about 2010.6031433378. The cubic root of 4042525 is about 159.3006586515.

Adding to 4042525 its reverse (5252404), we get a palindrome (9294929).

It can be divided in two parts, 404 and 2525, that multiplied together give a square (1020100 = 1010²).

The spelling of 4042525 in words is "four million, forty-two thousand, five hundred twenty-five".