825616800 has 432 divisors, whose sum is σ = 3139299072. Its totient is φ = 211507200.

The previous prime is 825616793. The next prime is 825616801. The reversal of 825616800 is 8616528.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (432).

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 (825616801) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 6026332 + ... + 6026468.

It is an arithmetic number, because the mean of its divisors is an integer number (7266896).

Almost surely, 2^825616800 is an apocalyptic number.

825616800 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 825616800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1569649536).

825616800 is an abundant number, since it is smaller than the sum of its proper divisors (2313682272).

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

825616800 is a wasteful number, since it uses less digits than its factorization.

825616800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 825616800 is about 28733.5483363959. The cubic root of 825616800 is about 938.1224026978.

The spelling of 825616800 in words is "eight hundred twenty-five million, six hundred sixteen thousand, eight hundred".