257253914 has 4 divisors (see below), whose sum is σ = 385880874. Its totient is φ = 128626956.

The previous prime is 257253881. The next prime is 257253923. The reversal of 257253914 is 419352752.

257253914 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 227496889 + 29757025 = 15083^2 + 5455^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64313477 + ... + 64313480.

Almost surely, 2^257253914 is an apocalyptic number.

257253914 is a deficient number, since it is larger than the sum of its proper divisors (128626960).

257253914 is a wasteful number, since it uses less digits than its factorization.

257253914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128626959.

The product of its digits is 75600, while the sum is 38.

The square root of 257253914 is about 16039.1369468560. The cubic root of 257253914 is about 635.9954329670.

The spelling of 257253914 in words is "two hundred fifty-seven million, two hundred fifty-three thousand, nine hundred fourteen".