20255012600 has 48 divisors (see below), whose sum is σ = 47102751600. Its totient is φ = 8100311040.

The previous prime is 20255012509. The next prime is 20255012621. The reversal of 20255012600 is 621055202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1452461 + ... + 1466339.

It is an arithmetic number, because the mean of its divisors is an integer number (981307325).

Almost surely, 2^20255012600 is an apocalyptic number.

20255012600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20255012600 is an abundant number, since it is smaller than the sum of its proper divisors (26847739000).

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

20255012600 is a wasteful number, since it uses less digits than its factorization.

20255012600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21192 (or 21183 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 20255012600 its reverse (621055202), we get a palindrome (20876067802).

The spelling of 20255012600 in words is "twenty billion, two hundred fifty-five million, twelve thousand, six hundred".