245125729 has 2 divisors, whose sum is σ = 245125730. Its totient is φ = 245125728.

The previous prime is 245125717. The next prime is 245125787. The reversal of 245125729 is 927521542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 244985104 + 140625 = 15652^2 + 375^2 .

It is a cyclic number.

It is not a de Polignac number, because 245125729 - 2¹⁷ = 244994657 is a prime.

It is not a weakly prime, because it can be changed into another prime (245125709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122562864 + 122562865.

It is an arithmetic number, because the mean of its divisors is an integer number (122562865).

Almost surely, 2^245125729 is an apocalyptic number.

It is an amenable number.

245125729 is a deficient number, since it is larger than the sum of its proper divisors (1).

245125729 is an equidigital number, since it uses as much as digits as its factorization.

245125729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 37.

The square root of 245125729 is about 15656.4915929464. The cubic root of 245125729 is about 625.8394939749.

The spelling of 245125729 in words is "two hundred forty-five million, one hundred twenty-five thousand, seven hundred twenty-nine".