1580725 has 12 divisors (see below), whose sum is σ = 1998756. Its totient is φ = 1239680.

The previous prime is 1580717. The next prime is 1580737. The reversal of 1580725 is 5270851.

It can be written as a sum of positive squares in 6 ways, for example, as 676 + 1580049 = 26^2 + 1257^2 .

It is not a de Polignac number, because 1580725 - 2³ = 1580717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1580693 and 1580702.

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 11 ways as a sum of consecutive naturals, for example, 729 + ... + 1921.

It is an arithmetic number, because the mean of its divisors is an integer number (166563).

2^1580725 is an apocalyptic number.

It is an amenable number.

1580725 is a deficient number, since it is larger than the sum of its proper divisors (418031).

1580725 is a wasteful number, since it uses less digits than its factorization.

1580725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256 (or 1251 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 1580725 is about 1257.2688654381. The cubic root of 1580725 is about 116.4891404345.

The spelling of 1580725 in words is "one million, five hundred eighty thousand, seven hundred twenty-five".