77112425 has 36 divisors (see below), whose sum is σ = 109521636. Its totient is φ = 53529600.

The previous prime is 77112379. The next prime is 77112449. The reversal of 77112425 is 52421177.

It can be written as a sum of positive squares in 18 ways, for example, as 50651689 + 26460736 = 7117^2 + 5144^2 .

It is not a de Polignac number, because 77112425 - 2⁶ = 77112361 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 (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 93515 + ... + 94335.

Almost surely, 2^77112425 is an apocalyptic number.

It is an amenable number.

77112425 is a deficient number, since it is larger than the sum of its proper divisors (32409211).

77112425 is a wasteful number, since it uses less digits than its factorization.

77112425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878 (or 856 counting only the distinct ones).

The product of its digits is 3920, while the sum is 29.

The square root of 77112425 is about 8781.3680597046. The cubic root of 77112425 is about 425.6390386469.

The spelling of 77112425 in words is "seventy-seven million, one hundred twelve thousand, four hundred twenty-five".