20125234443 has 4 divisors (see below), whose sum is σ = 26833645928. Its totient is φ = 13416822960.

The previous prime is 20125234403. The next prime is 20125234469. The reversal of 20125234443 is 34443252102.

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

It is not a de Polignac number, because 20125234443 - 2¹⁰ = 20125233419 is a prime.

It is a super-2 number, since 2×20125234443² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20125234443.

It is not an unprimeable number, because it can be changed into a prime (20125234403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3354205738 + ... + 3354205743.

It is an arithmetic number, because the mean of its divisors is an integer number (6708411482).

Almost surely, 2^20125234443 is an apocalyptic number.

20125234443 is a deficient number, since it is larger than the sum of its proper divisors (6708411485).

20125234443 is an equidigital number, since it uses as much as digits as its factorization.

20125234443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6708411484.

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 20125234443 its reverse (34443252102), we get a palindrome (54568486545).

The spelling of 20125234443 in words is "twenty billion, one hundred twenty-five million, two hundred thirty-four thousand, four hundred forty-three".