20125101253 has 2 divisors, whose sum is σ = 20125101254. Its totient is φ = 20125101252.

The previous prime is 20125101251. The next prime is 20125101281. The reversal of 20125101253 is 35210152102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16966886049 + 3158215204 = 130257^2 + 56198^2 .

It is a cyclic number.

It is not a de Polignac number, because 20125101253 - 2¹ = 20125101251 is a prime.

Together with 20125101251, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20125101251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10062550626 + 10062550627.

It is an arithmetic number, because the mean of its divisors is an integer number (10062550627).

Almost surely, 2^20125101253 is an apocalyptic number.

It is an amenable number.

20125101253 is a deficient number, since it is larger than the sum of its proper divisors (1).

20125101253 is an equidigital number, since it uses as much as digits as its factorization.

20125101253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 22.

Adding to 20125101253 its reverse (35210152102), we get a palindrome (55335253355).

The spelling of 20125101253 in words is "twenty billion, one hundred twenty-five million, one hundred one thousand, two hundred fifty-three".