257012467 has 2 divisors, whose sum is σ = 257012468. Its totient is φ = 257012466.

The previous prime is 257012453. The next prime is 257012473. The reversal of 257012467 is 764210752.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 257012467 - 2¹⁵ = 256979699 is a prime.

It is not a weakly prime, because it can be changed into another prime (257012417) 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 as a sum of consecutive naturals, namely, 128506233 + 128506234.

It is an arithmetic number, because the mean of its divisors is an integer number (128506234).

Almost surely, 2^257012467 is an apocalyptic number.

257012467 is a deficient number, since it is larger than the sum of its proper divisors (1).

257012467 is an equidigital number, since it uses as much as digits as its factorization.

257012467 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 257012467 is about 16031.6083722127. The cubic root of 257012467 is about 635.7963984110.

The spelling of 257012467 in words is "two hundred fifty-seven million, twelve thousand, four hundred sixty-seven".