18025446553 has 2 divisors, whose sum is σ = 18025446554. Its totient is φ = 18025446552.

The previous prime is 18025446493. The next prime is 18025446581. The reversal of 18025446553 is 35564452081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14002462224 + 4022984329 = 118332^2 + 63427^2 .

It is a cyclic number.

It is not a de Polignac number, because 18025446553 - 2²⁹ = 17488575641 is a prime.

It is not a weakly prime, because it can be changed into another prime (18025446583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9012723276 + 9012723277.

It is an arithmetic number, because the mean of its divisors is an integer number (9012723277).

Almost surely, 2^18025446553 is an apocalyptic number.

It is an amenable number.

18025446553 is a deficient number, since it is larger than the sum of its proper divisors (1).

18025446553 is an equidigital number, since it uses as much as digits as its factorization.

18025446553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576000, while the sum is 43.

The spelling of 18025446553 in words is "eighteen billion, twenty-five million, four hundred forty-six thousand, five hundred fifty-three".