50425870909 has 2 divisors, whose sum is σ = 50425870910. Its totient is φ = 50425870908.

The previous prime is 50425870889. The next prime is 50425870919. The reversal of 50425870909 is 90907852405.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50173760025 + 252110884 = 223995^2 + 15878^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50425870909 is a prime.

It is a super-2 number, since 2×50425870909² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50425870919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25212935454 + 25212935455.

It is an arithmetic number, because the mean of its divisors is an integer number (25212935455).

Almost surely, 2^50425870909 is an apocalyptic number.

It is an amenable number.

50425870909 is a deficient number, since it is larger than the sum of its proper divisors (1).

50425870909 is an equidigital number, since it uses as much as digits as its factorization.

50425870909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 907200, while the sum is 49.

The spelling of 50425870909 in words is "fifty billion, four hundred twenty-five million, eight hundred seventy thousand, nine hundred nine".