50725682209 has 2 divisors, whose sum is σ = 50725682210. Its totient is φ = 50725682208.

The previous prime is 50725682191. The next prime is 50725682233. The reversal of 50725682209 is 90228652705.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32138449984 + 18587232225 = 179272^2 + 136335^2 .

It is a cyclic number.

It is not a de Polignac number, because 50725682209 - 2¹⁵ = 50725649441 is a prime.

It is not a weakly prime, because it can be changed into another prime (50725682299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25362841104 + 25362841105.

It is an arithmetic number, because the mean of its divisors is an integer number (25362841105).

Almost surely, 2^50725682209 is an apocalyptic number.

It is an amenable number.

50725682209 is a deficient number, since it is larger than the sum of its proper divisors (1).

50725682209 is an equidigital number, since it uses as much as digits as its factorization.

50725682209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 50725682209 in words is "fifty billion, seven hundred twenty-five million, six hundred eighty-two thousand, two hundred nine".