4013525 has 6 divisors (see below), whose sum is σ = 4976802. Its totient is φ = 3210800.

The previous prime is 4013521. The next prime is 4013543. The reversal of 4013525 is 5253104.

It can be written as a sum of positive squares in 3 ways, for example, as 380689 + 3632836 = 617^2 + 1906^2 .

It is not a de Polignac number, because 4013525 - 2² = 4013521 is a prime.

It is a super-2 number, since 2×4013525² = 32216765851250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4013497 and 4013506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4013521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 80246 + ... + 80295.

It is an arithmetic number, because the mean of its divisors is an integer number (829467).

Almost surely, 2^4013525 is an apocalyptic number.

It is an amenable number.

4013525 is a deficient number, since it is larger than the sum of its proper divisors (963277).

4013525 is a wasteful number, since it uses less digits than its factorization.

4013525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160551 (or 160546 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 4013525 is about 2003.3783966091. The cubic root of 4013525 is about 158.9188172514.

Adding to 4013525 its reverse (5253104), we get a palindrome (9266629).

The spelling of 4013525 in words is "four million, thirteen thousand, five hundred twenty-five".