3638025 has 72 divisors (see below), whose sum is σ = 7350720. Its totient is φ = 1710720.

The previous prime is 3638023. The next prime is 3638027. The reversal of 3638025 is 5208363.

3638025 is a `hidden beast` number, since 3 + 638 + 0 + 25 = 666.

It is an interprime number because it is at equal distance from previous prime (3638023) and next prime (3638027).

It is not a de Polignac number, because 3638025 - 2¹ = 3638023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3638025.

It is not an unprimeable number, because it can be changed into a prime (3638023) 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, 98307 + ... + 98343.

Almost surely, 2^3638025 is an apocalyptic number.

It is an amenable number.

3638025 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

3638025 is a wasteful number, since it uses less digits than its factorization.

3638025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 3638025 is about 1907.3607419678. The cubic root of 3638025 is about 153.7996072327.

It can be divided in two parts, 36 and 38025, that multiplied together give a square (1368900 = 1170²).

The spelling of 3638025 in words is "three million, six hundred thirty-eight thousand, twenty-five".