18825011 has 4 divisors (see below), whose sum is σ = 19090224. Its totient is φ = 18559800.

The previous prime is 18825007. The next prime is 18825041. The reversal of 18825011 is 11052881.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18825011 - 2² = 18825007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18825041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132500 + ... + 132641.

It is an arithmetic number, because the mean of its divisors is an integer number (4772556).

Almost surely, 2^18825011 is an apocalyptic number.

18825011 is a deficient number, since it is larger than the sum of its proper divisors (265213).

18825011 is an equidigital number, since it uses as much as digits as its factorization.

18825011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265212.

The product of its (nonzero) digits is 640, while the sum is 26.

The square root of 18825011 is about 4338.7798976210. The cubic root of 18825011 is about 266.0184423869.

Adding to 18825011 its reverse (11052881), we get a palindrome (29877892).

The spelling of 18825011 in words is "eighteen million, eight hundred twenty-five thousand, eleven".