204125135126055 has 64 divisors (see below), whose sum is σ = 383708827772928. Its totient is φ = 91354162959360.

The previous prime is 204125135125963. The next prime is 204125135126069. The reversal of 204125135126055 is 550621531521402.

It is a happy number.

It is not a de Polignac number, because 204125135126055 - 2⁹ = 204125135125543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204125135125998 and 204125135126016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 76895122 + ... + 79505408.

It is an arithmetic number, because the mean of its divisors is an integer number (5995450433952).

Almost surely, 2^{204125135126055} is an apocalyptic number.

204125135126055 is a deficient number, since it is larger than the sum of its proper divisors (179583692646873).

204125135126055 is a wasteful number, since it uses less digits than its factorization.

204125135126055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2646776.

The product of its (nonzero) digits is 360000, while the sum is 42.

Adding to 204125135126055 its reverse (550621531521402), we get a palindrome (754746666647457).

The spelling of 204125135126055 in words is "two hundred four trillion, one hundred twenty-five billion, one hundred thirty-five million, one hundred twenty-six thousand, fifty-five".