257200423 has 2 divisors, whose sum is σ = 257200424. Its totient is φ = 257200422.

The previous prime is 257200387. The next prime is 257200441. The reversal of 257200423 is 324002752.

257200423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 257200423 - 2⁹ = 257199911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (257200523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128600211 + 128600212.

It is an arithmetic number, because the mean of its divisors is an integer number (128600212).

Almost surely, 2^257200423 is an apocalyptic number.

257200423 is a deficient number, since it is larger than the sum of its proper divisors (1).

257200423 is an equidigital number, since it uses as much as digits as its factorization.

257200423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 257200423 is about 16037.4693452552. The cubic root of 257200423 is about 635.9513489083.

The spelling of 257200423 in words is "two hundred fifty-seven million, two hundred thousand, four hundred twenty-three".