77825783252 has 24 divisors (see below), whose sum is σ = 156225941760. Its totient is φ = 33230826720.

The previous prime is 77825783251. The next prime is 77825783281. The reversal of 77825783252 is 25238752877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77825783251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5120627 + ... + 5135802.

It is an arithmetic number, because the mean of its divisors is an integer number (6509414240).

Almost surely, 2^77825783252 is an apocalyptic number.

It is an amenable number.

77825783252 is an abundant number, since it is smaller than the sum of its proper divisors (78400158508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77825783252 is a wasteful number, since it uses less digits than its factorization.

77825783252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10256711 (or 10256709 counting only the distinct ones).

The product of its digits is 13171200, while the sum is 56.

The spelling of 77825783252 in words is "seventy-seven billion, eight hundred twenty-five million, seven hundred eighty-three thousand, two hundred fifty-two".