20004425111 has 4 divisors (see below), whose sum is σ = 21823009224. Its totient is φ = 18185841000.

The previous prime is 20004425093. The next prime is 20004425117. The reversal of 20004425111 is 11152440002.

It is a happy number.

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 20004425111 - 2¹⁴ = 20004408727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20004425117) 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, 909292040 + ... + 909292061.

It is an arithmetic number, because the mean of its divisors is an integer number (5455752306).

Almost surely, 2^20004425111 is an apocalyptic number.

20004425111 is a deficient number, since it is larger than the sum of its proper divisors (1818584113).

20004425111 is a wasteful number, since it uses less digits than its factorization.

20004425111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1818584112.

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 20004425111 its reverse (11152440002), we get a palindrome (31156865113).

The spelling of 20004425111 in words is "twenty billion, four million, four hundred twenty-five thousand, one hundred eleven".