1325173727 has 4 divisors (see below), whose sum is σ = 1382790000. Its totient is φ = 1267557456.

The previous prime is 1325173721. The next prime is 1325173747. The reversal of 1325173727 is 7273715231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1325173727 - 2²⁰ = 1324125151 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 (1325173721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28808102 + ... + 28808147.

It is an arithmetic number, because the mean of its divisors is an integer number (345697500).

Almost surely, 2^1325173727 is an apocalyptic number.

1325173727 is a deficient number, since it is larger than the sum of its proper divisors (57616273).

1325173727 is an equidigital number, since it uses as much as digits as its factorization.

1325173727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57616272.

The product of its digits is 61740, while the sum is 38.

The square root of 1325173727 is about 36402.9356920565. The cubic root of 1325173727 is about 1098.3926184639.

Adding to 1325173727 its reverse (7273715231), we get a palindrome (8598888958).

The spelling of 1325173727 in words is "one billion, three hundred twenty-five million, one hundred seventy-three thousand, seven hundred twenty-seven".