18025577 has 2 divisors, whose sum is σ = 18025578. Its totient is φ = 18025576.

The previous prime is 18025543. The next prime is 18025589. The reversal of 18025577 is 77552081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15452761 + 2572816 = 3931^2 + 1604^2 .

It is a cyclic number.

It is not a de Polignac number, because 18025577 - 2¹⁸ = 17763433 is a prime.

It is not a weakly prime, because it can be changed into another prime (18025517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9012788 + 9012789.

It is an arithmetic number, because the mean of its divisors is an integer number (9012789).

Almost surely, 2^18025577 is an apocalyptic number.

It is an amenable number.

18025577 is a deficient number, since it is larger than the sum of its proper divisors (1).

18025577 is an equidigital number, since it uses as much as digits as its factorization.

18025577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19600, while the sum is 35.

The square root of 18025577 is about 4245.6538954559. The cubic root of 18025577 is about 262.1982116037.

The spelling of 18025577 in words is "eighteen million, twenty-five thousand, five hundred seventy-seven".