1725132909 has 4 divisors (see below), whose sum is σ = 2300177216. Its totient is φ = 1150088604.

The previous prime is 1725132883. The next prime is 1725132923. The reversal of 1725132909 is 9092315271.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1725132909 - 2¹⁵ = 1725100141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1725132809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287522149 + ... + 287522154.

It is an arithmetic number, because the mean of its divisors is an integer number (575044304).

Almost surely, 2^1725132909 is an apocalyptic number.

It is an amenable number.

1725132909 is a deficient number, since it is larger than the sum of its proper divisors (575044307).

1725132909 is an equidigital number, since it uses as much as digits as its factorization.

1725132909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575044306.

The product of its (nonzero) digits is 34020, while the sum is 39.

The square root of 1725132909 is about 41534.7193201062. The cubic root of 1725132909 is about 1199.3359541315.

The spelling of 1725132909 in words is "one billion, seven hundred twenty-five million, one hundred thirty-two thousand, nine hundred nine".