125236169 has 2 divisors, whose sum is σ = 125236170. Its totient is φ = 125236168.

The previous prime is 125236151. The next prime is 125236171. The reversal of 125236169 is 961632521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66912400 + 58323769 = 8180^2 + 7637^2 .

It is a cyclic number.

It is not a de Polignac number, because 125236169 - 2¹² = 125232073 is a prime.

It is a super-2 number, since 2×125236169² = 31368196051593122, which contains 22 as substring.

Together with 125236171, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (125236369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62618084 + 62618085.

It is an arithmetic number, because the mean of its divisors is an integer number (62618085).

Almost surely, 2^125236169 is an apocalyptic number.

It is an amenable number.

125236169 is a deficient number, since it is larger than the sum of its proper divisors (1).

125236169 is an equidigital number, since it uses as much as digits as its factorization.

125236169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 35.

The square root of 125236169 is about 11190.8967022308. The cubic root of 125236169 is about 500.3146938940.

The spelling of 125236169 in words is "one hundred twenty-five million, two hundred thirty-six thousand, one hundred sixty-nine".