257261073562 has 4 divisors (see below), whose sum is σ = 385891610346. Its totient is φ = 128630536780.

The previous prime is 257261073551. The next prime is 257261073599. The reversal of 257261073562 is 265370162752.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 201592918081 + 55668155481 = 448991^2 + 235941^2 .

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 as a sum of consecutive naturals, namely, 64315268389 + ... + 64315268392.

Almost surely, 2^257261073562 is an apocalyptic number.

257261073562 is a deficient number, since it is larger than the sum of its proper divisors (128630536784).

257261073562 is a wasteful number, since it uses less digits than its factorization.

257261073562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128630536783.

The product of its (nonzero) digits is 1058400, while the sum is 46.

The spelling of 257261073562 in words is "two hundred fifty-seven billion, two hundred sixty-one million, seventy-three thousand, five hundred sixty-two".