3128525 has 6 divisors (see below), whose sum is σ = 3879402. Its totient is φ = 2502800.

The previous prime is 3128501. The next prime is 3128533. The reversal of 3128525 is 5258213.

It can be written as a sum of positive squares in 3 ways, for example, as 218089 + 2910436 = 467^2 + 1706^2 .

It is not a de Polignac number, because 3128525 - 2¹⁴ = 3112141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3128494 and 3128503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62546 + ... + 62595.

It is an arithmetic number, because the mean of its divisors is an integer number (646567).

Almost surely, 2^3128525 is an apocalyptic number.

It is an amenable number.

3128525 is a deficient number, since it is larger than the sum of its proper divisors (750877).

3128525 is a wasteful number, since it uses less digits than its factorization.

3128525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125151 (or 125146 counting only the distinct ones).

The product of its digits is 2400, while the sum is 26.

The square root of 3128525 is about 1768.7636925265. The cubic root of 3128525 is about 146.2558377878.

The spelling of 3128525 in words is "three million, one hundred twenty-eight thousand, five hundred twenty-five".