18025001 has 2 divisors, whose sum is σ = 18025002. Its totient is φ = 18025000.

The previous prime is 18024971. The next prime is 18025019. The reversal of 18025001 is 10052081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9759376 + 8265625 = 3124^2 + 2875^2 .

It is a cyclic number.

It is not a de Polignac number, because 18025001 - 2²² = 13830697 is a prime.

It is a super-2 number, since 2×18025001² = 649801322100002, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18025061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9012500 + 9012501.

It is an arithmetic number, because the mean of its divisors is an integer number (9012501).

Almost surely, 2^18025001 is an apocalyptic number.

It is an amenable number.

18025001 is a deficient number, since it is larger than the sum of its proper divisors (1).

18025001 is an equidigital number, since it uses as much as digits as its factorization.

18025001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 18025001 is about 4245.5860608401. The cubic root of 18025001 is about 262.1954187614.

Adding to 18025001 its reverse (10052081), we get a palindrome (28077082).

The spelling of 18025001 in words is "eighteen million, twenty-five thousand, one".