18149125 has 8 divisors (see below), whose sum is σ = 22650264. Its totient is φ = 14519200.

The previous prime is 18149119. The next prime is 18149171. The reversal of 18149125 is 52194181.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1940449 + 16208676 = 1393^2 + 4026^2 .

It is not a de Polignac number, because 18149125 - 2¹⁷ = 18018053 is a prime.

It is a super-3 number, since 3×18149125³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72472 + ... + 72721.

It is an arithmetic number, because the mean of its divisors is an integer number (2831283).

Almost surely, 2^18149125 is an apocalyptic number.

It is an amenable number.

18149125 is a deficient number, since it is larger than the sum of its proper divisors (4501139).

18149125 is an equidigital number, since it uses as much as digits as its factorization.

18149125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145208 (or 145198 counting only the distinct ones).

The product of its digits is 2880, while the sum is 31.

The square root of 18149125 is about 4260.1789868502. The cubic root of 18149125 is about 262.7958870646.

The spelling of 18149125 in words is "eighteen million, one hundred forty-nine thousand, one hundred twenty-five".