161025803 has 8 divisors (see below), whose sum is σ = 161928000. Its totient is φ = 160126920.

The previous prime is 161025793. The next prime is 161025859. The reversal of 161025803 is 308520161.

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 161025803 - 2¹⁰ = 161024779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161025863) 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 7 ways as a sum of consecutive naturals, for example, 232688 + ... + 233378.

It is an arithmetic number, because the mean of its divisors is an integer number (20241000).

Almost surely, 2^161025803 is an apocalyptic number.

161025803 is a deficient number, since it is larger than the sum of its proper divisors (902197).

161025803 is an equidigital number, since it uses as much as digits as its factorization.

161025803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1657.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 161025803 is about 12689.5942803543. The cubic root of 161025803 is about 544.0412434038.

Adding to 161025803 its reverse (308520161), we get a palindrome (469545964).

The spelling of 161025803 in words is "one hundred sixty-one million, twenty-five thousand, eight hundred three".