784913825 has 6 divisors (see below), whose sum is σ = 973293174. Its totient is φ = 627931040.

The previous prime is 784913809. The next prime is 784913849. The reversal of 784913825 is 528319487.

It is a happy number.

784913825 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 71436304 + 713477521 = 8452^2 + 26711^2 .

It is not a de Polignac number, because 784913825 - 2⁴ = 784913809 is a prime.

It is a super-2 number, since 2×784913825² = 1232179425352261250, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 784913825.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15698252 + ... + 15698301.

It is an arithmetic number, because the mean of its divisors is an integer number (162215529).

Almost surely, 2^784913825 is an apocalyptic number.

It is an amenable number.

784913825 is a deficient number, since it is larger than the sum of its proper divisors (188379349).

784913825 is a wasteful number, since it uses less digits than its factorization.

784913825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31396563 (or 31396558 counting only the distinct ones).

The product of its digits is 483840, while the sum is 47.

The square root of 784913825 is about 28016.3135512151. The cubic root of 784913825 is about 922.4453788259.

The spelling of 784913825 in words is "seven hundred eighty-four million, nine hundred thirteen thousand, eight hundred twenty-five".