3666525 has 48 divisors (see below), whose sum is σ = 6666240. Its totient is φ = 1771200.

The previous prime is 3666521. The next prime is 3666529. The reversal of 3666525 is 5256663.

It is an interprime number because it is at equal distance from previous prime (3666521) and next prime (3666529).

It is not a de Polignac number, because 3666525 - 2² = 3666521 is a prime.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a d-powerful number, because it can be written as 3¹³ + 6² + 6⁴ + 6⁸ + 5⁴ + 2² + 5⁸ .

3666525 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3666521) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 44134 + ... + 44216.

It is an arithmetic number, because the mean of its divisors is an integer number (138880).

Almost surely, 2^3666525 is an apocalyptic number.

It is an amenable number.

3666525 is a deficient number, since it is larger than the sum of its proper divisors (2999715).

3666525 is a wasteful number, since it uses less digits than its factorization.

3666525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146 (or 141 counting only the distinct ones).

The product of its digits is 32400, while the sum is 33.

The square root of 3666525 is about 1914.8172236535. The cubic root of 3666525 is about 154.2001810102.

The spelling of 3666525 in words is "three million, six hundred sixty-six thousand, five hundred twenty-five".