77755807525 has 12 divisors (see below), whose sum is σ = 105182401824. Its totient is φ = 56549678000.

The previous prime is 77755807523. The next prime is 77755807541. The reversal of 77755807525 is 52570855777.

It is not a de Polignac number, because 77755807525 - 2¹ = 77755807523 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77755807525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77755807523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 141373921 + ... + 141374470.

It is an arithmetic number, because the mean of its divisors is an integer number (8765200152).

Almost surely, 2^77755807525 is an apocalyptic number.

It is an amenable number.

77755807525 is a deficient number, since it is larger than the sum of its proper divisors (27426594299).

77755807525 is a wasteful number, since it uses less digits than its factorization.

77755807525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282748412 (or 282748407 counting only the distinct ones).

The product of its (nonzero) digits is 24010000, while the sum is 58.

The spelling of 77755807525 in words is "seventy-seven billion, seven hundred fifty-five million, eight hundred seven thousand, five hundred twenty-five".