20404511125000 has 56 divisors (see below), whose sum is σ = 47822461106850. Its totient is φ = 8161804400000.

The previous prime is 20404511124929. The next prime is 20404511125057. The reversal of 20404511125000 is 52111540402.

It can be written as a sum of positive squares in 7 ways, for example, as 7102107740484 + 13302403384516 = 2664978^2 + 3647246^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 81493045 + ... + 81743044.

Almost surely, 2^{20404511125000} is an apocalyptic number.

20404511125000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20404511125000 is an abundant number, since it is smaller than the sum of its proper divisors (27417949981850).

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

20404511125000 is an frugal number, since it uses more digits than its factorization.

20404511125000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163236125 (or 163236096 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 20404511125000 its reverse (52111540402), we get a palindrome (20456622665402).

The spelling of 20404511125000 in words is "twenty trillion, four hundred four billion, five hundred eleven million, one hundred twenty-five thousand".