102025161 has 24 divisors (see below), whose sum is σ = 174233280. Its totient is φ = 56288736.

The previous prime is 102025141. The next prime is 102025163. The reversal of 102025161 is 161520201.

It is not a de Polignac number, because 102025161 - 2⁵ = 102025129 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (102025163) 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 23 ways as a sum of consecutive naturals, for example, 26095 + ... + 29748.

It is an arithmetic number, because the mean of its divisors is an integer number (7259720).

Almost surely, 2^102025161 is an apocalyptic number.

It is an amenable number.

102025161 is a deficient number, since it is larger than the sum of its proper divisors (72208119).

102025161 is a wasteful number, since it uses less digits than its factorization.

102025161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55885 (or 55882 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 102025161 is about 10100.7505166695. The cubic root of 102025161 is about 467.2712881290.

Adding to 102025161 its reverse (161520201), we get a palindrome (263545362).

The spelling of 102025161 in words is "one hundred two million, twenty-five thousand, one hundred sixty-one".