77173045476225 has 48 divisors (see below), whose sum is σ = 129627529944000. Its totient is φ = 40507651480320.

The previous prime is 77173045476221. The next prime is 77173045476227. The reversal of 77173045476225 is 52267454037177.

It is not a de Polignac number, because 77173045476225 - 2² = 77173045476221 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (77173045476221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30460207 + ... + 32896356.

It is an arithmetic number, because the mean of its divisors is an integer number (2700573540500).

Almost surely, 2^{77173045476225} is an apocalyptic number.

77173045476225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

77173045476225 is a deficient number, since it is larger than the sum of its proper divisors (52454484467775).

77173045476225 is a wasteful number, since it uses less digits than its factorization.

77173045476225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63356834 (or 63356829 counting only the distinct ones).

The product of its (nonzero) digits is 69148800, while the sum is 60.

The spelling of 77173045476225 in words is "seventy-seven trillion, one hundred seventy-three billion, forty-five million, four hundred seventy-six thousand, two hundred twenty-five".