20525235530 has 16 divisors (see below), whose sum is σ = 37451526984. Its totient is φ = 8097626880.

The previous prime is 20525235503. The next prime is 20525235539. The reversal of 20525235530 is 3553252502.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11334370369 + 9190865161 = 106463^2 + 95869^2 .

It is not an unprimeable number, because it can be changed into a prime (20525235539) 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, 14057651 + ... + 14059110.

Almost surely, 2^20525235530 is an apocalyptic number.

20525235530 is a deficient number, since it is larger than the sum of its proper divisors (16926291454).

20525235530 is a wasteful number, since it uses less digits than its factorization.

20525235530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28116841.

The product of its (nonzero) digits is 45000, while the sum is 32.

The spelling of 20525235530 in words is "twenty billion, five hundred twenty-five million, two hundred thirty-five thousand, five hundred thirty".