3280725 has 36 divisors (see below), whose sum is σ = 6718816. Its totient is φ = 1499040.

The previous prime is 3280703. The next prime is 3280747. The reversal of 3280725 is 5270823.

3280725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3280703) and next prime (3280747).

It is not a de Polignac number, because 3280725 - 2⁶ = 3280661 is a prime.

It is a d-powerful number, because it can be written as 3² + 2¹⁸ + 8² + 0 + 7⁵ + 2²⁰ + 5⁹ .

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 534 + ... + 2616.

Almost surely, 2^3280725 is an apocalyptic number.

3280725 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3280725 is an abundant number, since it is smaller than the sum of its proper divisors (3438091).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3280725 is a wasteful number, since it uses less digits than its factorization.

3280725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2106 (or 2098 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 3280725 is about 1811.2771737092. The cubic root of 3280725 is about 148.5901231671.

It can be divided in two parts, 3280 and 725, that added together give a triangular number (4005 = T₈₉).

The spelling of 3280725 in words is "three million, two hundred eighty thousand, seven hundred twenty-five".