18106425 has 18 divisors (see below), whose sum is σ = 32431022. Its totient is φ = 9656640.

The previous prime is 18106423. The next prime is 18106453. The reversal of 18106425 is 52460181.

18106425 is a `hidden beast` number, since 1 + 8 + 10 + 642 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 1679616 + 16426809 = 1296^2 + 4053^2 .

It is not a de Polignac number, because 18106425 - 2¹ = 18106423 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18106423) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 40012 + ... + 40461.

Almost surely, 2^18106425 is an apocalyptic number.

18106425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18106425 is a deficient number, since it is larger than the sum of its proper divisors (14324597).

18106425 is a wasteful number, since it uses less digits than its factorization.

18106425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80489 (or 80481 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 18106425 is about 4255.1645091583. The cubic root of 18106425 is about 262.5896292570.

The spelling of 18106425 in words is "eighteen million, one hundred six thousand, four hundred twenty-five".