25424323212 has 12 divisors (see below), whose sum is σ = 59323420856. Its totient is φ = 8474774400.

The previous prime is 25424323181. The next prime is 25424323231. The reversal of 25424323212 is 21232342452.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 25424323212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1059346789 + ... + 1059346812.

Almost surely, 2^25424323212 is an apocalyptic number.

It is an amenable number.

25424323212 is an abundant number, since it is smaller than the sum of its proper divisors (33899097644).

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

25424323212 is a wasteful number, since it uses less digits than its factorization.

25424323212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2118693608 (or 2118693606 counting only the distinct ones).

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

Adding to 25424323212 its reverse (21232342452), we get a palindrome (46656665664).

The spelling of 25424323212 in words is "twenty-five billion, four hundred twenty-four million, three hundred twenty-three thousand, two hundred twelve".