77727325 has 18 divisors (see below), whose sum is σ = 104371854. Its totient is φ = 57395520.

The previous prime is 77727317. The next prime is 77727371. The reversal of 77727325 is 52372777.

It can be written as a sum of positive squares in 9 ways, for example, as 31337604 + 46389721 = 5598^2 + 6811^2 .

It is not a de Polignac number, because 77727325 - 2³ = 77727317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4974 + ... + 13423.

Almost surely, 2^77727325 is an apocalyptic number.

It is an amenable number.

77727325 is a deficient number, since it is larger than the sum of its proper divisors (26644529).

77727325 is a wasteful number, since it uses less digits than its factorization.

77727325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18433 (or 18415 counting only the distinct ones).

The product of its digits is 144060, while the sum is 40.

The square root of 77727325 is about 8816.3101692261. The cubic root of 77727325 is about 426.7674034465.

The spelling of 77727325 in words is "seventy-seven million, seven hundred twenty-seven thousand, three hundred twenty-five".