18125601 has 32 divisors (see below), whose sum is σ = 27914880. Its totient is φ = 10368000.

The previous prime is 18125573. The next prime is 18125603. The reversal of 18125601 is 10652181.

It is not a de Polignac number, because 18125601 - 2⁹ = 18125089 is a prime.

It is a super-2 number, since 2×18125601² = 657074823222402, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18125603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45001 + ... + 45401.

It is an arithmetic number, because the mean of its divisors is an integer number (872340).

Almost surely, 2^18125601 is an apocalyptic number.

It is an amenable number.

18125601 is a deficient number, since it is larger than the sum of its proper divisors (9789279).

18125601 is a wasteful number, since it uses less digits than its factorization.

18125601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497.

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 18125601 is about 4257.4171747669. The cubic root of 18125601 is about 262.6822969547.

Adding to 18125601 its reverse (10652181), we get a palindrome (28777782).

The spelling of 18125601 in words is "eighteen million, one hundred twenty-five thousand, six hundred one".