257132235 has 16 divisors (see below), whose sum is σ = 415259136. Its totient is φ = 135854688.

The previous prime is 257132233. The next prime is 257132243. The reversal of 257132235 is 532231752.

It is a happy number.

It is not a de Polignac number, because 257132235 - 2¹ = 257132233 is a prime.

It is a super-2 number, since 2×257132235² = 132233972552190450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (257132231) 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, 78499 + ... + 81708.

It is an arithmetic number, because the mean of its divisors is an integer number (25953696).

Almost surely, 2^257132235 is an apocalyptic number.

257132235 is a deficient number, since it is larger than the sum of its proper divisors (158126901).

257132235 is a wasteful number, since it uses less digits than its factorization.

257132235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160322.

The product of its digits is 12600, while the sum is 30.

The square root of 257132235 is about 16035.3433078310. The cubic root of 257132235 is about 635.8951436050.

Adding to 257132235 its reverse (532231752), we get a palindrome (789363987).

The spelling of 257132235 in words is "two hundred fifty-seven million, one hundred thirty-two thousand, two hundred thirty-five".