18125071 has 2 divisors, whose sum is σ = 18125072. Its totient is φ = 18125070.

The previous prime is 18125047. The next prime is 18125089. The reversal of 18125071 is 17052181.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18125071 - 2⁹ = 18124559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18129071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9062535 + 9062536.

It is an arithmetic number, because the mean of its divisors is an integer number (9062536).

Almost surely, 2^18125071 is an apocalyptic number.

18125071 is a deficient number, since it is larger than the sum of its proper divisors (1).

18125071 is an equidigital number, since it uses as much as digits as its factorization.

18125071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560, while the sum is 25.

The square root of 18125071 is about 4257.3549300006. The cubic root of 18125071 is about 262.6797366171.

It can be divided in two parts, 181 and 25071, that added together give a palindrome (25252).

The spelling of 18125071 in words is "eighteen million, one hundred twenty-five thousand, seventy-one".