780504225 has 12 divisors (see below), whose sum is σ = 1290433776. Its totient is φ = 416268880.

The previous prime is 780504217. The next prime is 780504227. The reversal of 780504225 is 522405087.

It is not a de Polignac number, because 780504225 - 2³ = 780504217 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (780504227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5203287 + ... + 5203436.

It is an arithmetic number, because the mean of its divisors is an integer number (107536148).

Almost surely, 2^780504225 is an apocalyptic number.

780504225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

780504225 is a deficient number, since it is larger than the sum of its proper divisors (509929551).

780504225 is a wasteful number, since it uses less digits than its factorization.

780504225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10406736 (or 10406731 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 780504225 is about 27937.5057046974. The cubic root of 780504225 is about 920.7147191093.

The spelling of 780504225 in words is "seven hundred eighty million, five hundred four thousand, two hundred twenty-five".