257572454457 has 8 divisors (see below), whose sum is σ = 343446597760. Its totient is φ = 171706640400.

The previous prime is 257572454453. The next prime is 257572454471. The reversal of 257572454457 is 754454275752.

257572454457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 257572454457 - 2² = 257572454453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 257572454397 and 257572454406.

It is not an unprimeable number, because it can be changed into a prime (257572454453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2009794 + ... + 2134107.

It is an arithmetic number, because the mean of its divisors is an integer number (42930824720).

Almost surely, 2^257572454457 is an apocalyptic number.

It is an amenable number.

257572454457 is a deficient number, since it is larger than the sum of its proper divisors (85874143303).

257572454457 is a wasteful number, since it uses less digits than its factorization.

257572454457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4164623.

The product of its digits is 54880000, while the sum is 57.

The spelling of 257572454457 in words is "two hundred fifty-seven billion, five hundred seventy-two million, four hundred fifty-four thousand, four hundred fifty-seven".