18348525 has 120 divisors (see below), whose sum is σ = 39700584. Its totient is φ = 8294400.

The previous prime is 18348521. The next prime is 18348541. The reversal of 18348525 is 52584381.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 10614564 + 7733961 = 3258^2 + 2781^2 .

It is not a de Polignac number, because 18348525 - 2² = 18348521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18348525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18348521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 447505 + ... + 447545.

Almost surely, 2^18348525 is an apocalyptic number.

18348525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18348525 is an abundant number, since it is smaller than the sum of its proper divisors (21352059).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18348525 is a wasteful number, since it uses less digits than its factorization.

18348525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93 (or 79 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 18348525 is about 4283.5178300084. The cubic root of 18348525 is about 263.7548085045.

The spelling of 18348525 in words is "eighteen million, three hundred forty-eight thousand, five hundred twenty-five".