77793725 has 12 divisors (see below), whose sum is σ = 99576960. Its totient is φ = 60226800.

The previous prime is 77793707. The next prime is 77793757. The reversal of 77793725 is 52739777.

It is not a de Polignac number, because 77793725 - 2²⁴ = 61016509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77793725.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49415 + ... + 50964.

It is an arithmetic number, because the mean of its divisors is an integer number (8298080).

Almost surely, 2^77793725 is an apocalyptic number.

It is an amenable number.

77793725 is a deficient number, since it is larger than the sum of its proper divisors (21783235).

77793725 is a wasteful number, since it uses less digits than its factorization.

77793725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100420 (or 100415 counting only the distinct ones).

The product of its digits is 648270, while the sum is 47.

The square root of 77793725 is about 8820.0751130588. The cubic root of 77793725 is about 426.8888934981. Note that the first 4 decimals are identical.

The spelling of 77793725 in words is "seventy-seven million, seven hundred ninety-three thousand, seven hundred twenty-five".