825813580 has 12 divisors (see below), whose sum is σ = 1734208560. Its totient is φ = 330325424.

The previous prime is 825813529. The next prime is 825813589. The reversal of 825813580 is 85318528.

It is not an unprimeable number, because it can be changed into a prime (825813589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20645320 + ... + 20645359.

It is an arithmetic number, because the mean of its divisors is an integer number (144517380).

Almost surely, 2^825813580 is an apocalyptic number.

It is an amenable number.

825813580 is an abundant number, since it is smaller than the sum of its proper divisors (908394980).

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

825813580 is a wasteful number, since it uses less digits than its factorization.

825813580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41290688 (or 41290686 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 40.

The square root of 825813580 is about 28736.9723527027. The cubic root of 825813580 is about 938.1969284188.

The spelling of 825813580 in words is "eight hundred twenty-five million, eight hundred thirteen thousand, five hundred eighty".