100125161 has 2 divisors, whose sum is σ = 100125162. Its totient is φ = 100125160.

The previous prime is 100125131. The next prime is 100125203. The reversal of 100125161 is 161521001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79477225 + 20647936 = 8915^2 + 4544^2 .

It is an emirp because it is prime and its reverse (161521001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100125161 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (100125131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50062580 + 50062581.

It is an arithmetic number, because the mean of its divisors is an integer number (50062581).

Almost surely, 2^100125161 is an apocalyptic number.

It is an amenable number.

100125161 is a deficient number, since it is larger than the sum of its proper divisors (1).

100125161 is an equidigital number, since it uses as much as digits as its factorization.

100125161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 100125161 is about 10006.2560930650. The cubic root of 100125161 is about 464.3524512599.

Adding to 100125161 its reverse (161521001), we get a palindrome (261646162).

It can be divided in two parts, 1001 and 25161, that added together give a palindrome (26162).

The spelling of 100125161 in words is "one hundred million, one hundred twenty-five thousand, one hundred sixty-one".