252778002778 has 8 divisors (see below), whose sum is σ = 433333719072. Its totient is φ = 108333429756.

The previous prime is 252778002721. The next prime is 252778002779. The reversal of 252778002778 is 877200877252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (252778002779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9027785800 + ... + 9027785827.

It is an arithmetic number, because the mean of its divisors is an integer number (54166714884).

Almost surely, 2^252778002778 is an apocalyptic number.

252778002778 is a deficient number, since it is larger than the sum of its proper divisors (180555716294).

252778002778 is a wasteful number, since it uses less digits than its factorization.

252778002778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18055571636.

The product of its (nonzero) digits is 6146560, while the sum is 55.

The spelling of 252778002778 in words is "two hundred fifty-two billion, seven hundred seventy-eight million, two thousand, seven hundred seventy-eight".