20001254530 has 16 divisors (see below), whose sum is σ = 36008836920. Its totient is φ = 7999039872.

The previous prime is 20001254527. The next prime is 20001254531. The reversal of 20001254530 is 3545210002.

It can be written as a sum of positive squares in 4 ways, for example, as 19198042249 + 803212281 = 138557^2 + 28341^2 .

It is not an unprimeable number, because it can be changed into a prime (20001254531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124395 + ... + 235534.

Almost surely, 2^20001254530 is an apocalyptic number.

20001254530 is a deficient number, since it is larger than the sum of its proper divisors (16007582390).

20001254530 is a wasteful number, since it uses less digits than its factorization.

20001254530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365493.

The product of its (nonzero) digits is 1200, while the sum is 22.

Adding to 20001254530 its reverse (3545210002), we get a palindrome (23546464532).

The spelling of 20001254530 in words is "twenty billion, one million, two hundred fifty-four thousand, five hundred thirty".