257253611 has 2 divisors, whose sum is σ = 257253612. Its totient is φ = 257253610.

The previous prime is 257253599. The next prime is 257253617. The reversal of 257253611 is 116352752.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 257253611 - 2¹⁰ = 257252587 is a prime.

It is not a weakly prime, because it can be changed into another prime (257253617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128626805 + 128626806.

It is an arithmetic number, because the mean of its divisors is an integer number (128626806).

Almost surely, 2^257253611 is an apocalyptic number.

257253611 is a deficient number, since it is larger than the sum of its proper divisors (1).

257253611 is an equidigital number, since it uses as much as digits as its factorization.

257253611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12600, while the sum is 32.

The square root of 257253611 is about 16039.1275012078. The cubic root of 257253611 is about 635.9951832698.

The spelling of 257253611 in words is "two hundred fifty-seven million, two hundred fifty-three thousand, six hundred eleven".