4025565 has 16 divisors (see below), whose sum is σ = 7156800. Its totient is φ = 2146896.

The previous prime is 4025551. The next prime is 4025599. The reversal of 4025565 is 5655204.

It is not a de Polignac number, because 4025565 - 2⁶ = 4025501 is a prime.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14775 + ... + 15044.

It is an arithmetic number, because the mean of its divisors is an integer number (447300).

Almost surely, 2^4025565 is an apocalyptic number.

4025565 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4025565 is a deficient number, since it is larger than the sum of its proper divisors (3131235).

4025565 is a wasteful number, since it uses less digits than its factorization.

4025565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29833 (or 29827 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 4025565 is about 2006.3810704849. The cubic root of 4025565 is about 159.0775698401.

The spelling of 4025565 in words is "four million, twenty-five thousand, five hundred sixty-five".