18941925 has 12 divisors (see below), whose sum is σ = 31317440. Its totient is φ = 10102320.

The previous prime is 18941921. The next prime is 18941933. The reversal of 18941925 is 52914981.

It is not a de Polignac number, because 18941925 - 2² = 18941921 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18941921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 126205 + ... + 126354.

Almost surely, 2^18941925 is an apocalyptic number.

18941925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18941925 is a deficient number, since it is larger than the sum of its proper divisors (12375515).

18941925 is a wasteful number, since it uses less digits than its factorization.

18941925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252572 (or 252567 counting only the distinct ones).

The product of its digits is 25920, while the sum is 39.

The square root of 18941925 is about 4352.2321859019. The cubic root of 18941925 is about 266.5680147240.

The spelling of 18941925 in words is "eighteen million, nine hundred forty-one thousand, nine hundred twenty-five".