76647506425 has 18 divisors (see below), whose sum is σ = 110560119198. Its totient is φ = 52558289280.

The previous prime is 76647506389. The next prime is 76647506431. The reversal of 76647506425 is 52460574667.

It can be written as a sum of positive squares in 3 ways, for example, as 13199941881 + 63447564544 = 114891^2 + 251888^2 .

It is not a de Polignac number, because 76647506425 - 2¹¹ = 76647504377 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 (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 31283472 + ... + 31285921.

Almost surely, 2^76647506425 is an apocalyptic number.

It is an amenable number.

76647506425 is a deficient number, since it is larger than the sum of its proper divisors (33912612773).

76647506425 is a wasteful number, since it uses less digits than its factorization.

76647506425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62569417 (or 62569405 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 52.

The spelling of 76647506425 in words is "seventy-six billion, six hundred forty-seven million, five hundred six thousand, four hundred twenty-five".