20123425252 has 36 divisors (see below), whose sum is σ = 41028539580. Its totient is φ = 8611063104.

The previous prime is 20123425247. The next prime is 20123425261. The reversal of 20123425252 is 25252432102.

It can be written as a sum of positive squares in 2 ways, for example, as 3320525376 + 16802899876 = 57624^2 + 129626^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 20123425252.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 49374 + ... + 206602.

It is an arithmetic number, because the mean of its divisors is an integer number (1139681655).

Almost surely, 2^20123425252 is an apocalyptic number.

It is an amenable number.

20123425252 is an abundant number, since it is smaller than the sum of its proper divisors (20905114328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20123425252 is a wasteful number, since it uses less digits than its factorization.

20123425252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157900 (or 157891 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 20123425252 its reverse (25252432102), we get a palindrome (45375857354).

The spelling of 20123425252 in words is "twenty billion, one hundred twenty-three million, four hundred twenty-five thousand, two hundred fifty-two".