780125000 has 84 divisors (see below), whose sum is σ = 1851831765. Its totient is φ = 308100000.

The previous prime is 780124997. The next prime is 780125011. The reversal of 780125000 is 521087.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 4 ways, for example, as 133033156 + 647091844 = 11534^2 + 25438^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=19750.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 9874961 + ... + 9875039.

Almost surely, 2^780125000 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 780125000

780125000 is an abundant number, since it is smaller than the sum of its proper divisors (1071706765).

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

780125000 is an frugal number, since it uses more digits than its factorization.

780125000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 780125000 is about 27930.7178568686. The cubic root of 780125000 is about 920.5655785101.

Adding to 780125000 its reverse (521087), we get a palindrome (780646087).

The spelling of 780125000 in words is "seven hundred eighty million, one hundred twenty-five thousand".