825580557775 has 12 divisors (see below), whose sum is σ = 1025857108800. Its totient is φ = 659085596480.

The previous prime is 825580557733. The next prime is 825580557799. The reversal of 825580557775 is 577755085528.

It is a happy number.

It is not a de Polignac number, because 825580557775 - 2⁷ = 825580557647 is a prime.

It is a super-2 number, since 2×825580557775² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34459030 + ... + 34482979.

It is an arithmetic number, because the mean of its divisors is an integer number (85488092400).

Almost surely, 2^825580557775 is an apocalyptic number.

825580557775 is a deficient number, since it is larger than the sum of its proper divisors (200276551025).

825580557775 is a wasteful number, since it uses less digits than its factorization.

825580557775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68942498 (or 68942493 counting only the distinct ones).

The product of its (nonzero) digits is 137200000, while the sum is 64.

The spelling of 825580557775 in words is "eight hundred twenty-five billion, five hundred eighty million, five hundred fifty-seven thousand, seven hundred seventy-five".