2550385129 has 2 divisors, whose sum is σ = 2550385130. Its totient is φ = 2550385128.

The previous prime is 2550385091. The next prime is 2550385139. The reversal of 2550385129 is 9215830552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2528078400 + 22306729 = 50280^2 + 4723^2 .

It is a cyclic number.

It is not a de Polignac number, because 2550385129 - 2¹³ = 2550376937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2550385091 and 2550385100.

It is not a weakly prime, because it can be changed into another prime (2550385139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275192564 + 1275192565.

It is an arithmetic number, because the mean of its divisors is an integer number (1275192565).

Almost surely, 2^2550385129 is an apocalyptic number.

It is an amenable number.

2550385129 is a deficient number, since it is larger than the sum of its proper divisors (1).

2550385129 is an equidigital number, since it uses as much as digits as its factorization.

2550385129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108000, while the sum is 40.

The square root of 2550385129 is about 50501.3378931687. The cubic root of 2550385129 is about 1366.2659839528.

The spelling of 2550385129 in words is "two billion, five hundred fifty million, three hundred eighty-five thousand, one hundred twenty-nine".