125541541 has 2 divisors, whose sum is σ = 125541542. Its totient is φ = 125541540.

The previous prime is 125541539. The next prime is 125541649. The reversal of 125541541 is 145145521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124768900 + 772641 = 11170^2 + 879^2 .

It is a cyclic number.

It is not a de Polignac number, because 125541541 - 2¹ = 125541539 is a prime.

Together with 125541539, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125241541) 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, 62770770 + 62770771.

It is an arithmetic number, because the mean of its divisors is an integer number (62770771).

Almost surely, 2^125541541 is an apocalyptic number.

It is an amenable number.

125541541 is a deficient number, since it is larger than the sum of its proper divisors (1).

125541541 is an equidigital number, since it uses as much as digits as its factorization.

125541541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4000, while the sum is 28.

The square root of 125541541 is about 11204.5321633703. The cubic root of 125541541 is about 500.7210144432.

The spelling of 125541541 in words is "one hundred twenty-five million, five hundred forty-one thousand, five hundred forty-one".