18825007 has 2 divisors, whose sum is σ = 18825008. Its totient is φ = 18825006.

The previous prime is 18824999. The next prime is 18825041. The reversal of 18825007 is 70052881.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18825007 - 2³ = 18824999 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18825007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18825047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9412503 + 9412504.

It is an arithmetic number, because the mean of its divisors is an integer number (9412504).

Almost surely, 2^18825007 is an apocalyptic number.

18825007 is a deficient number, since it is larger than the sum of its proper divisors (1).

18825007 is an equidigital number, since it uses as much as digits as its factorization.

18825007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 18825007 is about 4338.7794366619. The cubic root of 18825007 is about 266.0184235454.

Adding to 18825007 its reverse (70052881), we get a palindrome (88877888).

It can be divided in two parts, 1882 and 5007, that added together give a square (6889 = 83²).

The spelling of 18825007 in words is "eighteen million, eight hundred twenty-five thousand, seven".