3640304025 has 72 divisors (see below), whose sum is σ = 6995177280. Its totient is φ = 1874456640.

The previous prime is 3640304021. The next prime is 3640304039. The reversal of 3640304025 is 5204030463.

It is not a de Polignac number, because 3640304025 - 2² = 3640304021 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 3640304025.

It is not an unprimeable number, because it can be changed into a prime (3640304021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 165844 + ... + 186506.

It is an arithmetic number, because the mean of its divisors is an integer number (97155240).

Almost surely, 2^3640304025 is an apocalyptic number.

It is an amenable number.

3640304025 is a deficient number, since it is larger than the sum of its proper divisors (3354873255).

3640304025 is a wasteful number, since it uses less digits than its factorization.

3640304025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20717 (or 20700 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 3640304025 is about 60334.9320460378. The cubic root of 3640304025 is about 1538.3171622800.

Adding to 3640304025 its reverse (5204030463), we get a palindrome (8844334488).

The spelling of 3640304025 in words is "three billion, six hundred forty million, three hundred four thousand, twenty-five".