505525825578 has 16 divisors (see below), whose sum is σ = 1014810210720. Its totient is φ = 167882181936.

The previous prime is 505525825547. The next prime is 505525825591. The reversal of 505525825578 is 875528525505.

It is a Curzon 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 7 ways as a sum of consecutive naturals, for example, 156604900 + ... + 156608127.

It is an arithmetic number, because the mean of its divisors is an integer number (63425638170).

Almost surely, 2^505525825578 is an apocalyptic number.

505525825578 is an abundant number, since it is smaller than the sum of its proper divisors (509284385142).

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

505525825578 is a wasteful number, since it uses less digits than its factorization.

505525825578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313213301.

The product of its (nonzero) digits is 28000000, while the sum is 57.

The spelling of 505525825578 in words is "five hundred five billion, five hundred twenty-five million, eight hundred twenty-five thousand, five hundred seventy-eight".