825215484 has 12 divisors (see below), whose sum is σ = 1925502824. Its totient is φ = 275071824.

The previous prime is 825215473. The next prime is 825215497. The reversal of 825215484 is 484512528.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34383967 + ... + 34383990.

Almost surely, 2^825215484 is an apocalyptic number.

It is an amenable number.

825215484 is an abundant number, since it is smaller than the sum of its proper divisors (1100287340).

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

825215484 is a wasteful number, since it uses less digits than its factorization.

825215484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68767964 (or 68767962 counting only the distinct ones).

The product of its digits is 102400, while the sum is 39.

The square root of 825215484 is about 28726.5640827440. The cubic root of 825215484 is about 937.9703771467.

The spelling of 825215484 in words is "eight hundred twenty-five million, two hundred fifteen thousand, four hundred eighty-four".