2025565 has 8 divisors (see below), whose sum is σ = 2496600. Its totient is φ = 1576512.

The previous prime is 2025557. The next prime is 2025577. The reversal of 2025565 is 5655202.

2025565 = T₁₉₆ + T₁₉₇ + ... + T₂₆₉.

It can be written as a sum of positive squares in 4 ways, for example, as 145924 + 1879641 = 382^2 + 1371^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2025565 - 2³ = 2025557 is a prime.

2025565 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5290 + ... + 5659.

It is an arithmetic number, because the mean of its divisors is an integer number (312075).

2^2025565 is an apocalyptic number.

It is an amenable number.

2025565 is a deficient number, since it is larger than the sum of its proper divisors (471035).

2025565 is a wasteful number, since it uses less digits than its factorization.

2025565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10991.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 2025565 is about 1423.2234539945. The cubic root of 2025565 is about 126.5266651074.

The spelling of 2025565 in words is "two million, twenty-five thousand, five hundred sixty-five".