257022312145 has 8 divisors (see below), whose sum is σ = 308454451200. Its totient is φ = 205599398640.

The previous prime is 257022312119. The next prime is 257022312167. The reversal of 257022312145 is 541213220752.

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

It is not a de Polignac number, because 257022312145 - 2⁷ = 257022312017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 257022312145.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2244945 + ... + 2356654.

It is an arithmetic number, because the mean of its divisors is an integer number (38556806400).

Almost surely, 2^257022312145 is an apocalyptic number.

It is an amenable number.

257022312145 is a deficient number, since it is larger than the sum of its proper divisors (51432139055).

257022312145 is a wasteful number, since it uses less digits than its factorization.

257022312145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4612775.

The product of its (nonzero) digits is 33600, while the sum is 34.

Adding to 257022312145 its reverse (541213220752), we get a palindrome (798235532897).

The spelling of 257022312145 in words is "two hundred fifty-seven billion, twenty-two million, three hundred twelve thousand, one hundred forty-five".