77328425 has 6 divisors (see below), whose sum is σ = 95887278. Its totient is φ = 61862720.

The previous prime is 77328401. The next prime is 77328457. The reversal of 77328425 is 52482377.

It can be written as a sum of positive squares in 3 ways, for example, as 310249 + 77018176 = 557^2 + 8776^2 .

It is not a de Polignac number, because 77328425 - 2¹⁰ = 77327401 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1546544 + ... + 1546593.

It is an arithmetic number, because the mean of its divisors is an integer number (15981213).

Almost surely, 2^77328425 is an apocalyptic number.

It is an amenable number.

77328425 is a deficient number, since it is larger than the sum of its proper divisors (18558853).

77328425 is a wasteful number, since it uses less digits than its factorization.

77328425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3093147 (or 3093142 counting only the distinct ones).

The product of its digits is 94080, while the sum is 38.

The square root of 77328425 is about 8793.6582262446. The cubic root of 77328425 is about 426.0360880329.

The spelling of 77328425 in words is "seventy-seven million, three hundred twenty-eight thousand, four hundred twenty-five".