18680425 has 12 divisors (see below), whose sum is σ = 23220736. Its totient is φ = 14907600.

The previous prime is 18680423. The next prime is 18680429. The reversal of 18680425 is 52408681.

It is not a de Polignac number, because 18680425 - 2¹ = 18680423 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18680423) 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, 14560 + ... + 15790.

Almost surely, 2^18680425 is an apocalyptic number.

It is an amenable number.

18680425 is a deficient number, since it is larger than the sum of its proper divisors (4540311).

18680425 is a wasteful number, since it uses less digits than its factorization.

18680425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1848 (or 1843 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 18680425 is about 4322.0857233516. The cubic root of 18680425 is about 265.3356373727.

The spelling of 18680425 in words is "eighteen million, six hundred eighty thousand, four hundred twenty-five".