825616512 has 192 divisors, whose sum is σ = 2779508160. Its totient is φ = 230307840.

The previous prime is 825616511. The next prime is 825616541. The reversal of 825616512 is 215616528.

825616512 is a `hidden beast` number, since 8 + 25 + 616 + 5 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a super-2 number, since 2×825616512² = 1363285249774092288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (825616511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 345562 + ... + 347942.

It is an arithmetic number, because the mean of its divisors is an integer number (14476605).

Almost surely, 2^825616512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 825616512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1389754080).

825616512 is an abundant number, since it is smaller than the sum of its proper divisors (1953891648).

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

825616512 is a wasteful number, since it uses less digits than its factorization.

825616512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2451 (or 2436 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 825616512 is about 28733.5433248320. The cubic root of 825616512 is about 938.1222936160.

The spelling of 825616512 in words is "eight hundred twenty-five million, six hundred sixteen thousand, five hundred twelve".