11505325129 has 2 divisors, whose sum is σ = 11505325130. Its totient is φ = 11505325128.

The previous prime is 11505325099. The next prime is 11505325159. The reversal of 11505325129 is 92152350511.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (11505325099) and next prime (11505325159).

It can be written as a sum of positive squares in only one way, i.e., 9069705225 + 2435619904 = 95235^2 + 49352^2 .

It is a cyclic number.

It is not a de Polignac number, because 11505325129 - 2²⁷ = 11371107401 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11505325094 and 11505325103.

It is not a weakly prime, because it can be changed into another prime (11505325159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5752662564 + 5752662565.

It is an arithmetic number, because the mean of its divisors is an integer number (5752662565).

Almost surely, 2^11505325129 is an apocalyptic number.

It is an amenable number.

11505325129 is a deficient number, since it is larger than the sum of its proper divisors (1).

11505325129 is an equidigital number, since it uses as much as digits as its factorization.

11505325129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13500, while the sum is 34.

The spelling of 11505325129 in words is "eleven billion, five hundred five million, three hundred twenty-five thousand, one hundred twenty-nine".