257514654545 has 16 divisors (see below), whose sum is σ = 313820723520. Its totient is φ = 202832424000.

The previous prime is 257514654503. The next prime is 257514654547. The reversal of 257514654545 is 545456415752.

It is a happy number.

It is not a de Polignac number, because 257514654545 - 2²⁶ = 257447545681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (257514654547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1333991 + ... + 1514780.

It is an arithmetic number, because the mean of its divisors is an integer number (19613795220).

Almost surely, 2^257514654545 is an apocalyptic number.

It is an amenable number.

257514654545 is a deficient number, since it is larger than the sum of its proper divisors (56306068975).

257514654545 is a wasteful number, since it uses less digits than its factorization.

257514654545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2849056.

The product of its digits is 16800000, while the sum is 53.

The spelling of 257514654545 in words is "two hundred fifty-seven billion, five hundred fourteen million, six hundred fifty-four thousand, five hundred forty-five".