20253033530 has 8 divisors (see below), whose sum is σ = 36455460372. Its totient is φ = 8101213408.

The previous prime is 20253033473. The next prime is 20253033547. The reversal of 20253033530 is 3533035202.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19007861161 + 1245172369 = 137869^2 + 35287^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20253033530.

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 in 3 ways as a sum of consecutive naturals, for example, 1012651667 + ... + 1012651686.

Almost surely, 2^20253033530 is an apocalyptic number.

20253033530 is a deficient number, since it is larger than the sum of its proper divisors (16202426842).

20253033530 is a wasteful number, since it uses less digits than its factorization.

20253033530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2025303360.

The product of its (nonzero) digits is 8100, while the sum is 26.

Adding to 20253033530 its reverse (3533035202), we get a palindrome (23786068732).

The spelling of 20253033530 in words is "twenty billion, two hundred fifty-three million, thirty-three thousand, five hundred thirty".