257262307445 has 64 divisors (see below), whose sum is σ = 379553900544. Its totient is φ = 164718808320.

The previous prime is 257262307439. The next prime is 257262307571. The reversal of 257262307445 is 544703262752.

It is not a de Polignac number, because 257262307445 - 2¹⁴ = 257262291061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 257262307445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5683874 + ... + 5728956.

It is an arithmetic number, because the mean of its divisors is an integer number (5930529696).

Almost surely, 2^257262307445 is an apocalyptic number.

It is an amenable number.

257262307445 is a deficient number, since it is larger than the sum of its proper divisors (122291593099).

257262307445 is a wasteful number, since it uses less digits than its factorization.

257262307445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45482.

The product of its (nonzero) digits is 2822400, while the sum is 47.

It can be divided in two parts, 257262307 and 445, that added together give a palindrome (257262752).

The spelling of 257262307445 in words is "two hundred fifty-seven billion, two hundred sixty-two million, three hundred seven thousand, four hundred forty-five".