257275472842 has 8 divisors (see below), whose sum is σ = 388280775456. Its totient is φ = 127848547692.

The previous prime is 257275472827. The next prime is 257275472843. The reversal of 257275472842 is 248274572752.

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 (257275472843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 394593958 + ... + 394594609.

It is an arithmetic number, because the mean of its divisors is an integer number (48535096932).

Almost surely, 2^257275472842 is an apocalyptic number.

257275472842 is a deficient number, since it is larger than the sum of its proper divisors (131005302614).

257275472842 is a wasteful number, since it uses less digits than its factorization.

257275472842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789188732.

The product of its digits is 17561600, while the sum is 55.

The spelling of 257275472842 in words is "two hundred fifty-seven billion, two hundred seventy-five million, four hundred seventy-two thousand, eight hundred forty-two".