257514514627 has 2 divisors, whose sum is σ = 257514514628. Its totient is φ = 257514514626.

The previous prime is 257514514619. The next prime is 257514514651. The reversal of 257514514627 is 726415415752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 257514514627 - 2³ = 257514514619 is a prime.

It is not a weakly prime, because it can be changed into another prime (257514514027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128757257313 + 128757257314.

It is an arithmetic number, because the mean of its divisors is an integer number (128757257314).

Almost surely, 2^257514514627 is an apocalyptic number.

257514514627 is a deficient number, since it is larger than the sum of its proper divisors (1).

257514514627 is an equidigital number, since it uses as much as digits as its factorization.

257514514627 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2352000, while the sum is 49.

The spelling of 257514514627 in words is "two hundred fifty-seven billion, five hundred fourteen million, five hundred fourteen thousand, six hundred twenty-seven".