20121225053 has 2 divisors, whose sum is σ = 20121225054. Its totient is φ = 20121225052.

The previous prime is 20121225043. The next prime is 20121225077. The reversal of 20121225053 is 35052212102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18833994169 + 1287230884 = 137237^2 + 35878^2 .

It is a cyclic number.

It is not a de Polignac number, because 20121225053 - 2⁶ = 20121224989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20121225043) 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 as a sum of consecutive naturals, namely, 10060612526 + 10060612527.

It is an arithmetic number, because the mean of its divisors is an integer number (10060612527).

Almost surely, 2^20121225053 is an apocalyptic number.

It is an amenable number.

20121225053 is a deficient number, since it is larger than the sum of its proper divisors (1).

20121225053 is an equidigital number, since it uses as much as digits as its factorization.

20121225053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 20121225053 its reverse (35052212102), we get a palindrome (55173437155).

The spelling of 20121225053 in words is "twenty billion, one hundred twenty-one million, two hundred twenty-five thousand, fifty-three".