257455332722156 has 12 divisors (see below), whose sum is σ = 450547148376192. Its totient is φ = 128727576043248.

The previous prime is 257455332722131. The next prime is 257455332722209. The reversal of 257455332722156 is 651227233554752.

It is a junction number, because it is equal to n+sod(n) for n = 257455332722095 and 257455332722104.

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, 15949415 + ... + 27736158.

It is an arithmetic number, because the mean of its divisors is an integer number (37545595698016).

Almost surely, 2^{257455332722156} is an apocalyptic number.

It is an amenable number.

257455332722156 is a deficient number, since it is larger than the sum of its proper divisors (193091815654036).

257455332722156 is a wasteful number, since it uses less digits than its factorization.

257455332722156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45158920 (or 45158918 counting only the distinct ones).

The product of its digits is 105840000, while the sum is 59.

The spelling of 257455332722156 in words is "two hundred fifty-seven trillion, four hundred fifty-five billion, three hundred thirty-two million, seven hundred twenty-two thousand, one hundred fifty-six".