257195 has 4 divisors (see below), whose sum is σ = 308640. Its totient is φ = 205752.

The previous prime is 257189. The next prime is 257219. The reversal of 257195 is 591752.

257195 is nontrivially palindromic in base 15.

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

It is a cyclic number.

It is not a de Polignac number, because 257195 - 2⁸ = 256939 is a prime.

It is a super-2 number, since 2×257195² = 132298536050, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 257195.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25715 + ... + 25724.

It is an arithmetic number, because the mean of its divisors is an integer number (77160).

2²⁵⁷¹⁹⁵ is an apocalyptic number.

257195 is a deficient number, since it is larger than the sum of its proper divisors (51445).

257195 is an equidigital number, since it uses as much as digits as its factorization.

257195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51444.

The product of its digits is 3150, while the sum is 29.

The square root of 257195 is about 507.1439637815. The cubic root of 257195 is about 63.5946879257.

The spelling of 257195 in words is "two hundred fifty-seven thousand, one hundred ninety-five".