18812425 has 12 divisors (see below), whose sum is σ = 23418640. Its totient is φ = 14991120.

The previous prime is 18812411. The next prime is 18812441. The reversal of 18812425 is 52421881.

It is not a de Polignac number, because 18812425 - 2⁹ = 18811913 is a prime.

It is an unprimeable number.

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, 5746 + ... + 8404.

Almost surely, 2^18812425 is an apocalyptic number.

It is an amenable number.

18812425 is a deficient number, since it is larger than the sum of its proper divisors (4606215).

18812425 is a wasteful number, since it uses less digits than its factorization.

18812425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2952 (or 2947 counting only the distinct ones).

The product of its digits is 5120, while the sum is 31.

The square root of 18812425 is about 4337.3292473595. The cubic root of 18812425 is about 265.9591444215.

The spelling of 18812425 in words is "eighteen million, eight hundred twelve thousand, four hundred twenty-five".