778528283325 has 48 divisors (see below), whose sum is σ = 1399904317056. Its totient is φ = 379480608000.

The previous prime is 778528283293. The next prime is 778528283339. The reversal of 778528283325 is 523382825877.

It is not a de Polignac number, because 778528283325 - 2⁵ = 778528283293 is a prime.

It is a super-2 number, since 2×778528283325² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3854449 + ... + 4051398.

It is an arithmetic number, because the mean of its divisors is an integer number (29164673272).

Almost surely, 2^778528283325 is an apocalyptic number.

778528283325 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

778528283325 is a deficient number, since it is larger than the sum of its proper divisors (621376033731).

778528283325 is a wasteful number, since it uses less digits than its factorization.

778528283325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7905974 (or 7905969 counting only the distinct ones).

The product of its digits is 45158400, while the sum is 60.

The spelling of 778528283325 in words is "seven hundred seventy-eight billion, five hundred twenty-eight million, two hundred eighty-three thousand, three hundred twenty-five".