20125505403000 has 384 divisors, whose sum is σ = 74113885310400. Its totient is φ = 5051105280000.

The previous prime is 20125505402993. The next prime is 20125505403011. The reversal of 20125505403000 is 30450552102.

It is a happy number.

20125505403000 is a `hidden beast` number, since 2 + 0 + 1 + 255 + 0 + 5 + 403 + 0 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6513400 + ... + 9092600.

Almost surely, 2^{20125505403000} is an apocalyptic number.

20125505403000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20125505403000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37056942655200).

20125505403000 is an abundant number, since it is smaller than the sum of its proper divisors (53988379907400).

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

20125505403000 is a wasteful number, since it uses less digits than its factorization.

20125505403000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2579265 (or 2579228 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

Adding to 20125505403000 its reverse (30450552102), we get a palindrome (20155955955102).

The spelling of 20125505403000 in words is "twenty trillion, one hundred twenty-five billion, five hundred five million, four hundred three thousand".