3815525 has 12 divisors (see below), whose sum is σ = 5407392. Its totient is φ = 2616240.

The previous prime is 3815521. The next prime is 3815527. The reversal of 3815525 is 5255183.

3815525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3815525 - 2² = 3815521 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3815521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10727 + ... + 11076.

It is an arithmetic number, because the mean of its divisors is an integer number (450616).

Almost surely, 2^3815525 is an apocalyptic number.

3815525 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3815525 is a deficient number, since it is larger than the sum of its proper divisors (1591867).

3815525 is a wasteful number, since it uses less digits than its factorization.

3815525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21820 (or 21815 counting only the distinct ones).

The product of its digits is 6000, while the sum is 29.

The square root of 3815525 is about 1953.3368885064. The cubic root of 3815525 is about 156.2613005160.

The spelling of 3815525 in words is "three million, eight hundred fifteen thousand, five hundred twenty-five".