20001255002 has 4 divisors (see below), whose sum is σ = 30001882506. Its totient is φ = 10000627500.

The previous prime is 20001254969. The next prime is 20001255013. The reversal of 20001255002 is 20055210002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 18444084481 + 1557170521 = 135809^2 + 39461^2 .

It is a super-3 number, since 3×20001255002³ (a number of 32 digits) contains 333 as substring.

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 as a sum of consecutive naturals, namely, 5000313749 + ... + 5000313752.

Almost surely, 2^20001255002 is an apocalyptic number.

20001255002 is a deficient number, since it is larger than the sum of its proper divisors (10000627504).

20001255002 is a wasteful number, since it uses less digits than its factorization.

20001255002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10000627503.

The product of its (nonzero) digits is 200, while the sum is 17.

Adding to 20001255002 its reverse (20055210002), we get a palindrome (40056465004).

The spelling of 20001255002 in words is "twenty billion, one million, two hundred fifty-five thousand, two".