3591025 has 9 divisors (see below), whose sum is σ = 4464651. Its totient is φ = 2865240.

The previous prime is 3591023. The next prime is 3591047. The reversal of 3591025 is 5201953.

The square root of 3591025 is 1895.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1292769 + 2298256 = 1137^2 + 1516^2 .

It is not a de Polignac number, because 3591025 - 2¹ = 3591023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3591023) by changing a digit.

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 8 ways as a sum of consecutive naturals, for example, 9286 + ... + 9664.

Almost surely, 2^3591025 is an apocalyptic number.

3591025 is the 1895-th square number.

3591025 is the 948-th centered octagonal number.

It is an amenable number.

3591025 is a deficient number, since it is larger than the sum of its proper divisors (873626).

3591025 is an frugal number, since it uses more digits than its factorization.

3591025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768 (or 384 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 25.

The cubic root of 3591025 is about 153.1344170246.

Multiplying 3591025 by its sum of digits (25), we get a square (89775625 = 9475²).

3591025 divided by its sum of digits (25) gives a square (143641 = 379²).

Adding to 3591025 its reverse (5201953), we get a palindrome (8792978).

The spelling of 3591025 in words is "three million, five hundred ninety-one thousand, twenty-five".