825436580 has 24 divisors (see below), whose sum is σ = 1733990328. Its totient is φ = 330065408.

The previous prime is 825436561. The next prime is 825436669. The reversal of 825436580 is 85634528.

It can be written as a sum of positive squares in 4 ways, for example, as 113720896 + 711715684 = 10664^2 + 26678^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85772 + ... + 94908.

It is an arithmetic number, because the mean of its divisors is an integer number (72249597).

Almost surely, 2^825436580 is an apocalyptic number.

It is an amenable number.

825436580 is an abundant number, since it is smaller than the sum of its proper divisors (908553748).

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

825436580 is a wasteful number, since it uses less digits than its factorization.

825436580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13663 (or 13661 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 41.

The square root of 825436580 is about 28730.4121098184. The cubic root of 825436580 is about 938.0541382912.

The spelling of 825436580 in words is "eight hundred twenty-five million, four hundred thirty-six thousand, five hundred eighty".