30521052250 has 32 divisors (see below), whose sum is σ = 61530447888. Its totient is φ = 11269310400.

The previous prime is 30521052241. The next prime is 30521052251. The reversal of 30521052250 is 5225012503.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 647040969 + 29874011281 = 25437^2 + 172841^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (30521052251) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4692297 + ... + 4698796.

Almost surely, 2^30521052250 is an apocalyptic number.

30521052250 is an abundant number, since it is smaller than the sum of its proper divisors (31009395638).

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

30521052250 is a wasteful number, since it uses less digits than its factorization.

30521052250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9391123 (or 9391113 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

Adding to 30521052250 its reverse (5225012503), we get a palindrome (35746064753).

The spelling of 30521052250 in words is "thirty billion, five hundred twenty-one million, fifty-two thousand, two hundred fifty".