257572454455 has 4 divisors (see below), whose sum is σ = 309086945352. Its totient is φ = 206057963560.

The previous prime is 257572454453. The next prime is 257572454471. The reversal of 257572454455 is 554454275752.

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

It is not a de Polignac number, because 257572454455 - 2¹ = 257572454453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 257572454396 and 257572454405.

It is a congruent number.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25757245441 + ... + 25757245450.

It is an arithmetic number, because the mean of its divisors is an integer number (77271736338).

Almost surely, 2^257572454455 is an apocalyptic number.

257572454455 is a deficient number, since it is larger than the sum of its proper divisors (51514490897).

257572454455 is an equidigital number, since it uses as much as digits as its factorization.

257572454455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51514490896.

The product of its digits is 39200000, while the sum is 55.

The spelling of 257572454455 in words is "two hundred fifty-seven billion, five hundred seventy-two million, four hundred fifty-four thousand, four hundred fifty-five".