257302139222 has 8 divisors (see below), whose sum is σ = 386405677056. Its totient is φ = 128500246872.

The previous prime is 257302139209. The next prime is 257302139239. The reversal of 257302139222 is 222931203752.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75409238 + ... + 75412649.

It is an arithmetic number, because the mean of its divisors is an integer number (48300709632).

Almost surely, 2^257302139222 is an apocalyptic number.

257302139222 is a deficient number, since it is larger than the sum of its proper divisors (129103537834).

257302139222 is a wasteful number, since it uses less digits than its factorization.

257302139222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150822742.

The product of its (nonzero) digits is 90720, while the sum is 38.

The spelling of 257302139222 in words is "two hundred fifty-seven billion, three hundred two million, one hundred thirty-nine thousand, two hundred twenty-two".