18041925 has 48 divisors (see below), whose sum is σ = 34283520. Its totient is φ = 8280000.

The previous prime is 18041921. The next prime is 18041939. The reversal of 18041925 is 52914081.

It is a happy number.

It is not a de Polignac number, because 18041925 - 2² = 18041921 is a prime.

It is a super-2 number, since 2×18041925² = 651022115411250, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18041892 and 18041901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18041921) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15100 + ... + 16250.

It is an arithmetic number, because the mean of its divisors is an integer number (714240).

Almost surely, 2^18041925 is an apocalyptic number.

18041925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18041925 is a deficient number, since it is larger than the sum of its proper divisors (16241595).

18041925 is a wasteful number, since it uses less digits than its factorization.

18041925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194 (or 1189 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 18041925 is about 4247.5787220486. The cubic root of 18041925 is about 262.2774531019.

The spelling of 18041925 in words is "eighteen million, forty-one thousand, nine hundred twenty-five".