20955625920 has 168 divisors, whose sum is σ = 75872431440. Its totient is φ = 5294039040.

The previous prime is 20955625849. The next prime is 20955625927. The reversal of 20955625920 is 2952655902.

20955625920 is a `hidden beast` number, since 2 + 0 + 9 + 5 + 56 + 2 + 592 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20955625927) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 136761 + ... + 246200.

Almost surely, 2^20955625920 is an apocalyptic number.

20955625920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20955625920 is an abundant number, since it is smaller than the sum of its proper divisors (54916805520).

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

20955625920 is a wasteful number, since it uses less digits than its factorization.

20955625920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383003 (or 382990 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 45.

The spelling of 20955625920 in words is "twenty billion, nine hundred fifty-five million, six hundred twenty-five thousand, nine hundred twenty".