827857125420 has 96 divisors (see below), whose sum is σ = 2504828152512. Its totient is φ = 203084663808.

The previous prime is 827857125373. The next prime is 827857125443. The reversal of 827857125420 is 24521758728.

It is a super-2 number, since 2×827857125420² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1582647 + ... + 2039726.

It is an arithmetic number, because the mean of its divisors is an integer number (26091959922).

Almost surely, 2^827857125420 is an apocalyptic number.

It is an amenable number.

827857125420 is an abundant number, since it is smaller than the sum of its proper divisors (1676971027092).

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

827857125420 is a wasteful number, since it uses less digits than its factorization.

827857125420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3622691 (or 3622689 counting only the distinct ones).

The product of its (nonzero) digits is 2508800, while the sum is 51.

The spelling of 827857125420 in words is "eight hundred twenty-seven billion, eight hundred fifty-seven million, one hundred twenty-five thousand, four hundred twenty".