825431830 has 16 divisors (see below), whose sum is σ = 1510961040. Its totient is φ = 324576352.

The previous prime is 825431807. The next prime is 825431851. The reversal of 825431830 is 38134528.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 698929 + ... + 700108.

It is an arithmetic number, because the mean of its divisors is an integer number (94435065).

Almost surely, 2^825431830 is an apocalyptic number.

825431830 is a deficient number, since it is larger than the sum of its proper divisors (685529210).

825431830 is a wasteful number, since it uses less digits than its factorization.

825431830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399103.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 825431830 is about 28730.3294446827. The cubic root of 825431830 is about 938.0523389341.

The spelling of 825431830 in words is "eight hundred twenty-five million, four hundred thirty-one thousand, eight hundred thirty".