18025157 has 2 divisors, whose sum is σ = 18025158. Its totient is φ = 18025156.

The previous prime is 18025109. The next prime is 18025159. The reversal of 18025157 is 75152081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11296321 + 6728836 = 3361^2 + 2594^2 .

It is a cyclic number.

It is not a de Polignac number, because 18025157 - 2¹² = 18021061 is a prime.

Together with 18025159, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_1152848 and since 18025157 and 1152848 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18025159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9012578 + 9012579.

It is an arithmetic number, because the mean of its divisors is an integer number (9012579).

Almost surely, 2^18025157 is an apocalyptic number.

It is an amenable number.

18025157 is a deficient number, since it is larger than the sum of its proper divisors (1).

18025157 is an equidigital number, since it uses as much as digits as its factorization.

18025157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2800, while the sum is 29.

The square root of 18025157 is about 4245.6044328223. The cubic root of 18025157 is about 262.1961751621.

The spelling of 18025157 in words is "eighteen million, twenty-five thousand, one hundred fifty-seven".