20512224305 has 16 divisors (see below), whose sum is σ = 25594182144. Its totient is φ = 15764499840.

The previous prime is 20512224287. The next prime is 20512224323. The reversal of 20512224305 is 50342221502.

It is an interprime number because it is at equal distance from previous prime (20512224287) and next prime (20512224323).

It is not a de Polignac number, because 20512224305 - 2¹⁸ = 20511962161 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 461747 + ... + 504216.

It is an arithmetic number, because the mean of its divisors is an integer number (1599636384).

Almost surely, 2^20512224305 is an apocalyptic number.

It is an amenable number.

20512224305 is a deficient number, since it is larger than the sum of its proper divisors (5081957839).

20512224305 is a wasteful number, since it uses less digits than its factorization.

20512224305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966136.

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 20512224305 its reverse (50342221502), we get a palindrome (70854445807).

The spelling of 20512224305 in words is "twenty billion, five hundred twelve million, two hundred twenty-four thousand, three hundred five".