257221267620050 has 24 divisors (see below), whose sum is σ = 494929197699300. Its totient is φ = 99340627494080.

The previous prime is 257221267620019. The next prime is 257221267620073. The reversal of 257221267620050 is 50026762122752.

It can be written as a sum of positive squares in 6 ways, for example, as 57988240230001 + 199233027390049 = 7615001^2 + 14114993^2 .

It is a junction number, because it is equal to n+sod(n) for n = 257221267619977 and 257221267620004.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 88696987385 + ... + 88696990284.

Almost surely, 2^{257221267620050} is an apocalyptic number.

257221267620050 is a deficient number, since it is larger than the sum of its proper divisors (237707930079250).

257221267620050 is a wasteful number, since it uses less digits than its factorization.

257221267620050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177393977710 (or 177393977705 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 47.

The spelling of 257221267620050 in words is "two hundred fifty-seven trillion, two hundred twenty-one billion, two hundred sixty-seven million, six hundred twenty thousand, fifty".