125544101 has 2 divisors, whose sum is σ = 125544102. Its totient is φ = 125544100.

The previous prime is 125544061. The next prime is 125544119. The reversal of 125544101 is 101445521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84916225 + 40627876 = 9215^2 + 6374^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125544101 is a prime.

It is a super-2 number, since 2×125544101² = 31522642591796402, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125544151) by changing a digit.

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 as a sum of consecutive naturals, namely, 62772050 + 62772051.

It is an arithmetic number, because the mean of its divisors is an integer number (62772051).

Almost surely, 2^125544101 is an apocalyptic number.

It is an amenable number.

125544101 is a deficient number, since it is larger than the sum of its proper divisors (1).

125544101 is an equidigital number, since it uses as much as digits as its factorization.

125544101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 125544101 is about 11204.6464022744. The cubic root of 125544101 is about 500.7244179304.

Adding to 125544101 its reverse (101445521), we get a palindrome (226989622).

The spelling of 125544101 in words is "one hundred twenty-five million, five hundred forty-four thousand, one hundred one".