257153212 has 12 divisors (see below), whose sum is σ = 450145696. Its totient is φ = 128540160.

The previous prime is 257153209. The next prime is 257153213. The reversal of 257153212 is 212351752.

It is a super-2 number, since 2×257153212² = 132255548883833888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257153213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12412 + ... + 25852.

Almost surely, 2^257153212 is an apocalyptic number.

It is an amenable number.

257153212 is a deficient number, since it is larger than the sum of its proper divisors (192992484).

257153212 is a wasteful number, since it uses less digits than its factorization.

257153212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18228 (or 18226 counting only the distinct ones).

The product of its digits is 4200, while the sum is 28.

The square root of 257153212 is about 16035.9973808928. The cubic root of 257153212 is about 635.9124353689.

The spelling of 257153212 in words is "two hundred fifty-seven million, one hundred fifty-three thousand, two hundred twelve".