78025000 has 48 divisors (see below), whose sum is σ = 182917980. Its totient is φ = 31200000.

The previous prime is 78024997. The next prime is 78025033. The reversal of 78025000 is 52087.

It can be written as a sum of positive squares in 6 ways, for example, as 35070084 + 42954916 = 5922^2 + 6554^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23440 + ... + 26560.

Almost surely, 2^78025000 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 78025000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91458990).

78025000 is an abundant number, since it is smaller than the sum of its proper divisors (104892980).

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

78025000 is an equidigital number, since it uses as much as digits as its factorization.

78025000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3152 (or 3128 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 78025000 is about 8833.1760992295. The cubic root of 78025000 is about 427.3115113566.

Adding to 78025000 its reverse (52087), we get a palindrome (78077087).

The spelling of 78025000 in words is "seventy-eight million, twenty-five thousand".