18025417537 has 2 divisors, whose sum is σ = 18025417538. Its totient is φ = 18025417536.

The previous prime is 18025417519. The next prime is 18025417541. The reversal of 18025417537 is 73571452081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18020109121 + 5308416 = 134239^2 + 2304^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18025417537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18025417493 and 18025417502.

It is not a weakly prime, because it can be changed into another prime (18025417507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9012708768 + 9012708769.

It is an arithmetic number, because the mean of its divisors is an integer number (9012708769).

Almost surely, 2^18025417537 is an apocalyptic number.

It is an amenable number.

18025417537 is a deficient number, since it is larger than the sum of its proper divisors (1).

18025417537 is an equidigital number, since it uses as much as digits as its factorization.

18025417537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 235200, while the sum is 43.

It can be divided in two parts, 180254 and 17537, that added together give a palindrome (197791).

The spelling of 18025417537 in words is "eighteen billion, twenty-five million, four hundred seventeen thousand, five hundred thirty-seven".