21302265250 has 32 divisors (see below), whose sum is σ = 45574678656. Its totient is φ = 7303633200.

The previous prime is 21302265221. The next prime is 21302265287. The reversal of 21302265250 is 5256220312.

21302265250 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 6084612 + ... + 6088111.

It is an arithmetic number, because the mean of its divisors is an integer number (1424208708).

Almost surely, 2^21302265250 is an apocalyptic number.

21302265250 is an abundant number, since it is smaller than the sum of its proper divisors (24272413406).

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

21302265250 is a wasteful number, since it uses less digits than its factorization.

21302265250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12172747 (or 12172737 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 21302265250 its reverse (5256220312), we get a palindrome (26558485562).

The spelling of 21302265250 in words is "twenty-one billion, three hundred two million, two hundred sixty-five thousand, two hundred fifty".