77525500004 has 12 divisors (see below), whose sum is σ = 135672336828. Its totient is φ = 38761975200.

The previous prime is 77525499983. The next prime is 77525500037. The reversal of 77525500004 is 40000552577.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 53079552100 + 24445947904 = 230390^2 + 156352^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71894 + ... + 400274.

It is an arithmetic number, because the mean of its divisors is an integer number (11306028069).

Almost surely, 2^77525500004 is an apocalyptic number.

It is an amenable number.

77525500004 is a deficient number, since it is larger than the sum of its proper divisors (58146836824).

77525500004 is a wasteful number, since it uses less digits than its factorization.

77525500004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387406 (or 387404 counting only the distinct ones).

The product of its (nonzero) digits is 49000, while the sum is 35.

The spelling of 77525500004 in words is "seventy-seven billion, five hundred twenty-five million, five hundred thousand, four".