1665325003 has 8 divisors (see below), whose sum is σ = 1723533840. Its totient is φ = 1607953920.

The previous prime is 1665324967. The next prime is 1665325007. The reversal of 1665325003 is 3005235661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1665325003 - 2⁹ = 1665324491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1665325007) 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 7 ways as a sum of consecutive naturals, for example, 205393 + ... + 213346.

It is an arithmetic number, because the mean of its divisors is an integer number (215441730).

Almost surely, 2^1665325003 is an apocalyptic number.

1665325003 is a deficient number, since it is larger than the sum of its proper divisors (58208837).

1665325003 is an equidigital number, since it uses as much as digits as its factorization.

1665325003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418877.

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 1665325003 is about 40808.3937811818. The cubic root of 1665325003 is about 1185.3128724559.

The spelling of 1665325003 in words is "one billion, six hundred sixty-five million, three hundred twenty-five thousand, three".