18625003 has 2 divisors, whose sum is σ = 18625004. Its totient is φ = 18625002.

The previous prime is 18624973. The next prime is 18625021. The reversal of 18625003 is 30052681.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18625003 - 2²¹ = 16527851 is a prime.

It is not a weakly prime, because it can be changed into another prime (18625043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9312501 + 9312502.

It is an arithmetic number, because the mean of its divisors is an integer number (9312502).

Almost surely, 2^18625003 is an apocalyptic number.

18625003 is a deficient number, since it is larger than the sum of its proper divisors (1).

18625003 is an equidigital number, since it uses as much as digits as its factorization.

18625003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 18625003 is about 4315.6694729787. The cubic root of 18625003 is about 265.0729738511.

Adding to 18625003 its reverse (30052681), we get a palindrome (48677684).

The spelling of 18625003 in words is "eighteen million, six hundred twenty-five thousand, three".