20125443241 has 2 divisors, whose sum is σ = 20125443242. Its totient is φ = 20125443240.

The previous prime is 20125443197. The next prime is 20125443293. The reversal of 20125443241 is 14234452102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20083141225 + 42302016 = 141715^2 + 6504^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20125443241 is a prime.

It is not a weakly prime, because it can be changed into another prime (20125453241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10062721620 + 10062721621.

It is an arithmetic number, because the mean of its divisors is an integer number (10062721621).

Almost surely, 2^20125443241 is an apocalyptic number.

It is an amenable number.

20125443241 is a deficient number, since it is larger than the sum of its proper divisors (1).

20125443241 is an equidigital number, since it uses as much as digits as its factorization.

20125443241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 20125443241 its reverse (14234452102), we get a palindrome (34359895343).

The spelling of 20125443241 in words is "twenty billion, one hundred twenty-five million, four hundred forty-three thousand, two hundred forty-one".