3525565 has 4 divisors (see below), whose sum is σ = 4230684. Its totient is φ = 2820448.

The previous prime is 3525563. The next prime is 3525581. The reversal of 3525565 is 5655253.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5655253 = 41 ⋅137933.

It can be written as a sum of positive squares in 2 ways, for example, as 1483524 + 2042041 = 1218^2 + 1429^2 .

It is a cyclic number.

It is not a de Polignac number, because 3525565 - 2¹ = 3525563 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3525563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352552 + ... + 352561.

It is an arithmetic number, because the mean of its divisors is an integer number (1057671).

Almost surely, 2^3525565 is an apocalyptic number.

It is an amenable number.

3525565 is a deficient number, since it is larger than the sum of its proper divisors (705119).

3525565 is an equidigital number, since it uses as much as digits as its factorization.

3525565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705118.

The product of its digits is 22500, while the sum is 31.

The square root of 3525565 is about 1877.6487957017. The cubic root of 3525565 is about 152.1982207310.

It can be divided in two parts, 35 and 25565, that added together give a square (25600 = 160²).

The spelling of 3525565 in words is "three million, five hundred twenty-five thousand, five hundred sixty-five".