257542223 has 8 divisors (see below), whose sum is σ = 261666720. Its totient is φ = 253448800.

The previous prime is 257542199. The next prime is 257542253. The reversal of 257542223 is 322245752.

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 257542223 - 2⁸ = 257541967 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 257542223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257542253) 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, 9233 + ... + 24501.

It is an arithmetic number, because the mean of its divisors is an integer number (32708340).

Almost surely, 2^257542223 is an apocalyptic number.

257542223 is a deficient number, since it is larger than the sum of its proper divisors (4124497).

257542223 is a wasteful number, since it uses less digits than its factorization.

257542223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15537.

The product of its digits is 33600, while the sum is 32.

The square root of 257542223 is about 16048.1221019782. The cubic root of 257542223 is about 636.2329346990.

Adding to 257542223 its reverse (322245752), we get a palindrome (579787975).

The spelling of 257542223 in words is "two hundred fifty-seven million, five hundred forty-two thousand, two hundred twenty-three".