825357805830 has 48 divisors (see below), whose sum is σ = 2147316022800. Its totient is φ = 219953289024.

The previous prime is 825357805829. The next prime is 825357805903. The reversal of 825357805830 is 38508753528.

It is a happy number.

825357805830 is a `hidden beast` number, since 8 + 2 + 5 + 3 + 57 + 8 + 0 + 583 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2820772 + ... + 3099591.

It is an arithmetic number, because the mean of its divisors is an integer number (44735750475).

Almost surely, 2^825357805830 is an apocalyptic number.

825357805830 is an abundant number, since it is smaller than the sum of its proper divisors (1321958216970).

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

825357805830 is a wasteful number, since it uses less digits than its factorization.

825357805830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5921925 (or 5921922 counting only the distinct ones).

The product of its (nonzero) digits is 8064000, while the sum is 54.

The spelling of 825357805830 in words is "eight hundred twenty-five billion, three hundred fifty-seven million, eight hundred five thousand, eight hundred thirty".