20625000312 has 64 divisors (see below), whose sum is σ = 61490695680. Its totient is φ = 5636644992.

The previous prime is 20625000247. The next prime is 20625000313. The reversal of 20625000312 is 21300052602.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20625000313) 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, 2665003 + ... + 2672730.

It is an arithmetic number, because the mean of its divisors is an integer number (960792120).

Almost surely, 2^20625000312 is an apocalyptic number.

It is an amenable number.

20625000312 is an abundant number, since it is smaller than the sum of its proper divisors (40865695368).

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

20625000312 is a wasteful number, since it uses less digits than its factorization.

20625000312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5337772 (or 5337768 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 20625000312 its reverse (21300052602), we get a palindrome (41925052914).

The spelling of 20625000312 in words is "twenty billion, six hundred twenty-five million, three hundred twelve", and thus it is an aban number.