125474521 has 2 divisors, whose sum is σ = 125474522. Its totient is φ = 125474520.

The previous prime is 125474509. The next prime is 125474527.

125474521 is nontrivially palindromic in base 10.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112254025 + 13220496 = 10595^2 + 3636^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 125474521 - 2⁹ = 125474009 is a prime.

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 (125474527) 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, 62737260 + 62737261.

It is an arithmetic number, because the mean of its divisors is an integer number (62737261).

Almost surely, 2^125474521 is an apocalyptic number.

It is an amenable number.

125474521 is a deficient number, since it is larger than the sum of its proper divisors (1).

125474521 is an equidigital number, since it uses as much as digits as its factorization.

125474521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11200, while the sum is 31.

The square root of 125474521 is about 11201.5410100575. The cubic root of 125474521 is about 500.6318957458.

The spelling of 125474521 in words is "one hundred twenty-five million, four hundred seventy-four thousand, five hundred twenty-one".