780284625 has 16 divisors (see below), whose sum is σ = 1298394240. Its totient is φ = 416151600.

The previous prime is 780284623. The next prime is 780284669. The reversal of 780284625 is 526482087.

It is a happy number.

It is not a de Polignac number, because 780284625 - 2¹ = 780284623 is a prime.

It is a super-2 number, since 2×780284625² = 1217688192022781250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (780284623) 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 15 ways as a sum of consecutive naturals, for example, 1040005 + ... + 1040754.

It is an arithmetic number, because the mean of its divisors is an integer number (81149640).

Almost surely, 2^780284625 is an apocalyptic number.

780284625 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

780284625 is a deficient number, since it is larger than the sum of its proper divisors (518109615).

780284625 is a wasteful number, since it uses less digits than its factorization.

780284625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2080777 (or 2080767 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 42.

The square root of 780284625 is about 27933.5752276718. The cubic root of 780284625 is about 920.6283612946.

The spelling of 780284625 in words is "seven hundred eighty million, two hundred eighty-four thousand, six hundred twenty-five".