161143410225 has 36 divisors (see below), whose sum is σ = 309921537264. Its totient is φ = 73665557280.

The previous prime is 161143410217. The next prime is 161143410247. The reversal of 161143410225 is 522014341161.

It is not a de Polignac number, because 161143410225 - 2³ = 161143410217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161143410192 and 161143410201.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 21920599 + ... + 21927948.

Almost surely, 2^161143410225 is an apocalyptic number.

161143410225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

161143410225 is a deficient number, since it is larger than the sum of its proper divisors (148778127039).

161143410225 is a wasteful number, since it uses less digits than its factorization.

161143410225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43848574 (or 43848562 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

Adding to 161143410225 its reverse (522014341161), we get a palindrome (683157751386).

The spelling of 161143410225 in words is "one hundred sixty-one billion, one hundred forty-three million, four hundred ten thousand, two hundred twenty-five".