50725009 has 2 divisors, whose sum is σ = 50725010. Its totient is φ = 50725008.

The previous prime is 50724983. The next prime is 50725013. The reversal of 50725009 is 90052705.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38787984 + 11937025 = 6228^2 + 3455^2 .

It is a cyclic number.

It is not a de Polignac number, because 50725009 - 2⁷ = 50724881 is a prime.

It is a Chen prime.

It is equal to p_3041974 and since 50725009 and 3041974 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (50725049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25362504 + 25362505.

It is an arithmetic number, because the mean of its divisors is an integer number (25362505).

Almost surely, 2^50725009 is an apocalyptic number.

It is an amenable number.

50725009 is a deficient number, since it is larger than the sum of its proper divisors (1).

50725009 is an equidigital number, since it uses as much as digits as its factorization.

50725009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 50725009 is about 7122.1491840595. The cubic root of 50725009 is about 370.1752493400.

The spelling of 50725009 in words is "fifty million, seven hundred twenty-five thousand, nine".