77327725 has 24 divisors (see below), whose sum is σ = 100743552. Its totient is φ = 58766400.

The previous prime is 77327651. The next prime is 77327729. The reversal of 77327725 is 52772377.

It is not a de Polignac number, because 77327725 - 2⁹ = 77327213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77327729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 103704 + ... + 104446.

It is an arithmetic number, because the mean of its divisors is an integer number (4197648).

Almost surely, 2^77327725 is an apocalyptic number.

It is an amenable number.

77327725 is a deficient number, since it is larger than the sum of its proper divisors (23415827).

77327725 is a wasteful number, since it uses less digits than its factorization.

77327725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957 (or 952 counting only the distinct ones).

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

The square root of 77327725 is about 8793.6184247442. The cubic root of 77327725 is about 426.0348024937.

The spelling of 77327725 in words is "seventy-seven million, three hundred twenty-seven thousand, seven hundred twenty-five".