257435423 has 8 divisors (see below), whose sum is σ = 294410880. Its totient is φ = 220509720.

The previous prime is 257435413. The next prime is 257435447. The reversal of 257435423 is 324534752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 257435423 - 2⁶ = 257435359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257435413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 593 + ... + 22698.

It is an arithmetic number, because the mean of its divisors is an integer number (36801360).

Almost surely, 2^257435423 is an apocalyptic number.

257435423 is a deficient number, since it is larger than the sum of its proper divisors (36975457).

257435423 is a wasteful number, since it uses less digits than its factorization.

257435423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24877.

The product of its digits is 100800, while the sum is 35.

The square root of 257435423 is about 16044.7942648075. The cubic root of 257435423 is about 636.1449762127.

The spelling of 257435423 in words is "two hundred fifty-seven million, four hundred thirty-five thousand, four hundred twenty-three".