125771449 has 2 divisors, whose sum is σ = 125771450. Its totient is φ = 125771448.

The previous prime is 125771411. The next prime is 125771467. The reversal of 125771449 is 944177521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124099600 + 1671849 = 11140^2 + 1293^2 .

It is a cyclic number.

It is not a de Polignac number, because 125771449 - 2¹⁷ = 125640377 is a prime.

It is not a weakly prime, because it can be changed into another prime (125771479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62885724 + 62885725.

It is an arithmetic number, because the mean of its divisors is an integer number (62885725).

Almost surely, 2^125771449 is an apocalyptic number.

It is an amenable number.

125771449 is a deficient number, since it is larger than the sum of its proper divisors (1).

125771449 is an equidigital number, since it uses as much as digits as its factorization.

125771449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70560, while the sum is 40.

The square root of 125771449 is about 11214.7870688658. The cubic root of 125771449 is about 501.0264898617.

The spelling of 125771449 in words is "one hundred twenty-five million, seven hundred seventy-one thousand, four hundred forty-nine".