4138525 has 6 divisors (see below), whose sum is σ = 5131802. Its totient is φ = 3310800.

The previous prime is 4138513. The next prime is 4138529. The reversal of 4138525 is 5258314.

4138525 = T₂₉₄ + T₂₉₅ + ... + T₃₆₈.

It can be written as a sum of positive squares in 3 ways, for example, as 1369 + 4137156 = 37^2 + 2034^2 .

It is not a de Polignac number, because 4138525 - 2¹¹ = 4136477 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4138493 and 4138502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4138529) 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 5 ways as a sum of consecutive naturals, for example, 82746 + ... + 82795.

Almost surely, 2^4138525 is an apocalyptic number.

It is an amenable number.

4138525 is a deficient number, since it is larger than the sum of its proper divisors (993277).

4138525 is a wasteful number, since it uses less digits than its factorization.

4138525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165551 (or 165546 counting only the distinct ones).

The product of its digits is 4800, while the sum is 28.

The square root of 4138525 is about 2034.3365011718. The cubic root of 4138525 is about 160.5518056903.

The spelling of 4138525 in words is "four million, one hundred thirty-eight thousand, five hundred twenty-five".