77525803250085 has 32 divisors (see below), whose sum is σ = 130577890037760. Its totient is φ = 39168497325888.

The previous prime is 77525803250083. The next prime is 77525803250099. The reversal of 77525803250085 is 58005230852577.

It is not a de Polignac number, because 77525803250085 - 2¹ = 77525803250083 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77525803250083) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3856909 + ... + 13035618.

It is an arithmetic number, because the mean of its divisors is an integer number (4080559063680).

Almost surely, 2^{77525803250085} is an apocalyptic number.

It is an amenable number.

77525803250085 is a deficient number, since it is larger than the sum of its proper divisors (53052086787675).

77525803250085 is a wasteful number, since it uses less digits than its factorization.

77525803250085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16908657.

The product of its (nonzero) digits is 23520000, while the sum is 57.

The spelling of 77525803250085 in words is "seventy-seven trillion, five hundred twenty-five billion, eight hundred three million, two hundred fifty thousand, eighty-five".