77041805125 has 24 divisors (see below), whose sum is σ = 96555533256. Its totient is φ = 61372640000.

The previous prime is 77041805119. The next prime is 77041805153. The reversal of 77041805125 is 52150814077.

It can be written as a sum of positive squares in 12 ways, for example, as 53179588449 + 23862216676 = 230607^2 + 154474^2 .

It is not a de Polignac number, because 77041805125 - 2⁹ = 77041804613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52019385 + ... + 52020865.

It is an arithmetic number, because the mean of its divisors is an integer number (4023147219).

Almost surely, 2^77041805125 is an apocalyptic number.

It is an amenable number.

77041805125 is a deficient number, since it is larger than the sum of its proper divisors (19513728131).

77041805125 is an frugal number, since it uses more digits than its factorization.

77041805125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3258 (or 1767 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 40.

The spelling of 77041805125 in words is "seventy-seven billion, forty-one million, eight hundred five thousand, one hundred twenty-five".