257245355 has 8 divisors (see below), whose sum is σ = 311051664. Its totient is φ = 204224800.

The previous prime is 257245321. The next prime is 257245379. The reversal of 257245355 is 553542752.

257245355 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 257245355 - 2²⁶ = 190136491 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195716 + ... + 197025.

It is an arithmetic number, because the mean of its divisors is an integer number (38881458).

Almost surely, 2^257245355 is an apocalyptic number.

257245355 is a deficient number, since it is larger than the sum of its proper divisors (53806309).

257245355 is a wasteful number, since it uses less digits than its factorization.

257245355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392877.

The product of its digits is 210000, while the sum is 38.

The square root of 257245355 is about 16038.8701285346. The cubic root of 257245355 is about 635.9883795656.

The spelling of 257245355 in words is "two hundred fifty-seven million, two hundred forty-five thousand, three hundred fifty-five".