3665025 has 72 divisors (see below), whose sum is σ = 8124480. Its totient is φ = 1537920.

The previous prime is 3665023. The next prime is 3665029. The reversal of 3665025 is 5205663.

3665025 is a `hidden beast` number, since 3 + 6 + 650 + 2 + 5 = 666.

It is not a de Polignac number, because 3665025 - 2¹ = 3665023 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3665025.

It is not an unprimeable number, because it can be changed into a prime (3665023) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 20386 + ... + 20564.

It is an arithmetic number, because the mean of its divisors is an integer number (112840).

Almost surely, 2^3665025 is an apocalyptic number.

3665025 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3665025 is an abundant number, since it is smaller than the sum of its proper divisors (4459455).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3665025 is a wasteful number, since it uses less digits than its factorization.

3665025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 3665025 is about 1914.4255012928. The cubic root of 3665025 is about 154.1791500321.

It can be divided in two parts, 36 and 65025, that multiplied together give a square (2340900 = 1530²).

The spelling of 3665025 in words is "three million, six hundred sixty-five thousand, twenty-five".