78825252 has 48 divisors (see below), whose sum is σ = 203212800. Its totient is φ = 23580960.

The previous prime is 78825223. The next prime is 78825269. The reversal of 78825252 is 25252887.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 78825252.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6649 + ... + 14207.

It is an arithmetic number, because the mean of its divisors is an integer number (4233600).

Almost surely, 2^78825252 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 78825252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101606400).

78825252 is an abundant number, since it is smaller than the sum of its proper divisors (124387548).

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

78825252 is a wasteful number, since it uses less digits than its factorization.

78825252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7656 (or 7654 counting only the distinct ones).

The product of its digits is 89600, while the sum is 39.

The square root of 78825252 is about 8878.3586320896. The cubic root of 78825252 is about 428.7674311720.

The spelling of 78825252 in words is "seventy-eight million, eight hundred twenty-five thousand, two hundred fifty-two".