20256205012 has 48 divisors (see below), whose sum is σ = 36951707520. Its totient is φ = 9704240000.

The previous prime is 20256204967. The next prime is 20256205043. The reversal of 20256205012 is 21050265202.

It is a happy number.

It is a congruent 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, 9053958 + ... + 9056194.

It is an arithmetic number, because the mean of its divisors is an integer number (769827240).

Almost surely, 2^20256205012 is an apocalyptic number.

It is an amenable number.

20256205012 is a deficient number, since it is larger than the sum of its proper divisors (16695502508).

20256205012 is a wasteful number, since it uses less digits than its factorization.

20256205012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2832 (or 2830 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The spelling of 20256205012 in words is "twenty billion, two hundred fifty-six million, two hundred five thousand, twelve".