77550530025 has 48 divisors (see below), whose sum is σ = 133831434240. Its totient is φ = 39550209600.

The previous prime is 77550529997. The next prime is 77550530033. The reversal of 77550530025 is 52003505577.

It is not a de Polignac number, because 77550530025 - 2⁶ = 77550529961 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11538616 + ... + 11545334.

It is an arithmetic number, because the mean of its divisors is an integer number (2788154880).

Almost surely, 2^77550530025 is an apocalyptic number.

77550530025 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

77550530025 is a deficient number, since it is larger than the sum of its proper divisors (56280904215).

77550530025 is a wasteful number, since it uses less digits than its factorization.

77550530025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13446 (or 13441 counting only the distinct ones).

The product of its (nonzero) digits is 183750, while the sum is 39.

The spelling of 77550530025 in words is "seventy-seven billion, five hundred fifty million, five hundred thirty thousand, twenty-five".