77216125 has 64 divisors (see below), whose sum is σ = 121305600. Its totient is φ = 47846400.

The previous prime is 77216099. The next prime is 77216131. The reversal of 77216125 is 52161277.

It is not a de Polignac number, because 77216125 - 2¹¹ = 77214077 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 431286 + ... + 431464.

It is an arithmetic number, because the mean of its divisors is an integer number (1895400).

Almost surely, 2^77216125 is an apocalyptic number.

It is an amenable number.

77216125 is a deficient number, since it is larger than the sum of its proper divisors (44089475).

77216125 is a wasteful number, since it uses less digits than its factorization.

77216125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247 (or 237 counting only the distinct ones).

The product of its digits is 5880, while the sum is 31.

The square root of 77216125 is about 8787.2706228954. The cubic root of 77216125 is about 425.8297515240.

The spelling of 77216125 in words is "seventy-seven million, two hundred sixteen thousand, one hundred twenty-five".