20201025530 has 64 divisors (see below), whose sum is σ = 43902293760. Its totient is φ = 6537729024.

The previous prime is 20201025497. The next prime is 20201025553. The reversal of 20201025530 is 3552010202.

It is a Curzon number.

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 31 ways as a sum of consecutive naturals, for example, 340994 + ... + 395826.

It is an arithmetic number, because the mean of its divisors is an integer number (685973340).

Almost surely, 2^20201025530 is an apocalyptic number.

20201025530 is an abundant number, since it is smaller than the sum of its proper divisors (23701268230).

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

20201025530 is a wasteful number, since it uses less digits than its factorization.

20201025530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55143.

The product of its (nonzero) digits is 600, while the sum is 20.

Adding to 20201025530 its reverse (3552010202), we get a palindrome (23753035732).

The spelling of 20201025530 in words is "twenty billion, two hundred one million, twenty-five thousand, five hundred thirty".