77055285285725 has 6 divisors (see below), whose sum is σ = 95548553754330. Its totient is φ = 61644228228560.

The previous prime is 77055285285721. The next prime is 77055285285757. The reversal of 77055285285725 is 52758258255077.

It can be written as a sum of positive squares in 3 ways, for example, as 10925682381604 + 66129602904121 = 3305402^2 + 8132011^2 .

It is not a de Polignac number, because 77055285285725 - 2² = 77055285285721 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77055285285721) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1541105705690 + ... + 1541105705739.

It is an arithmetic number, because the mean of its divisors is an integer number (15924758959055).

Almost surely, 2^{77055285285725} is an apocalyptic number.

It is an amenable number.

77055285285725 is a deficient number, since it is larger than the sum of its proper divisors (18493268468605).

77055285285725 is a wasteful number, since it uses less digits than its factorization.

77055285285725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3082211411439 (or 3082211411434 counting only the distinct ones).

The product of its (nonzero) digits is 548800000, while the sum is 68.

The spelling of 77055285285725 in words is "seventy-seven trillion, fifty-five billion, two hundred eighty-five million, two hundred eighty-five thousand, seven hundred twenty-five".