125828449049 has 2 divisors, whose sum is σ = 125828449050. Its totient is φ = 125828449048.

The previous prime is 125828449009. The next prime is 125828449063. The reversal of 125828449049 is 940944828521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67618201225 + 58210247824 = 260035^2 + 241268^2 .

It is a cyclic number.

It is not a de Polignac number, because 125828449049 - 2⁸ = 125828448793 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125828448985 and 125828449003.

It is not a weakly prime, because it can be changed into another prime (125828449009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62914224524 + 62914224525.

It is an arithmetic number, because the mean of its divisors is an integer number (62914224525).

Almost surely, 2^125828449049 is an apocalyptic number.

It is an amenable number.

125828449049 is a deficient number, since it is larger than the sum of its proper divisors (1).

125828449049 is an equidigital number, since it uses as much as digits as its factorization.

125828449049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6635520, while the sum is 56.

The spelling of 125828449049 in words is "one hundred twenty-five billion, eight hundred twenty-eight million, four hundred forty-nine thousand, forty-nine".