20001255532 has 6 divisors (see below), whose sum is σ = 35002197188. Its totient is φ = 10000627764.

The previous prime is 20001255509. The next prime is 20001255551. The reversal of 20001255532 is 23555210002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20001255497 and 20001255506.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2500156938 + ... + 2500156945.

Almost surely, 2^20001255532 is an apocalyptic number.

It is an amenable number.

20001255532 is a deficient number, since it is larger than the sum of its proper divisors (15000941656).

20001255532 is a wasteful number, since it uses less digits than its factorization.

20001255532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5000313887 (or 5000313885 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

Adding to 20001255532 its reverse (23555210002), we get a palindrome (43556465534).

The spelling of 20001255532 in words is "twenty billion, one million, two hundred fifty-five thousand, five hundred thirty-two".