18425634529 has 2 divisors, whose sum is σ = 18425634530. Its totient is φ = 18425634528.

The previous prime is 18425634463. The next prime is 18425634553. The reversal of 18425634529 is 92543652481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15593266129 + 2832368400 = 124873^2 + 53220^2 .

It is a cyclic number.

It is not a de Polignac number, because 18425634529 - 2¹⁷ = 18425503457 is a prime.

It is not a weakly prime, because it can be changed into another prime (18425634559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9212817264 + 9212817265.

It is an arithmetic number, because the mean of its divisors is an integer number (9212817265).

Almost surely, 2^18425634529 is an apocalyptic number.

It is an amenable number.

18425634529 is a deficient number, since it is larger than the sum of its proper divisors (1).

18425634529 is an equidigital number, since it uses as much as digits as its factorization.

18425634529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2073600, while the sum is 49.

The spelling of 18425634529 in words is "eighteen billion, four hundred twenty-five million, six hundred thirty-four thousand, five hundred twenty-nine".