1530725 has 12 divisors (see below), whose sum is σ = 2169504. Its totient is φ = 1049520.

The previous prime is 1530721. The next prime is 1530779. The reversal of 1530725 is 5270351.

It is not a de Polignac number, because 1530725 - 2² = 1530721 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1530725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1530721) 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 11 ways as a sum of consecutive naturals, for example, 4199 + ... + 4548.

It is an arithmetic number, because the mean of its divisors is an integer number (180792).

2^1530725 is an apocalyptic number.

It is an amenable number.

1530725 is a deficient number, since it is larger than the sum of its proper divisors (638779).

1530725 is an equidigital number, since it uses as much as digits as its factorization.

1530725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8764 (or 8759 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 1530725 is about 1237.2247168562. The cubic root of 1530725 is about 115.2477331206.

The spelling of 1530725 in words is "one million, five hundred thirty thousand, seven hundred twenty-five".