257725583 has 4 divisors (see below), whose sum is σ = 257846040. Its totient is φ = 257605128.

The previous prime is 257725561. The next prime is 257725597. The reversal of 257725583 is 385527752.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 257725583 - 2¹² = 257721487 is a prime.

It is a super-2 number, since 2×257725583² = 132844952265379778, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257725513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56960 + ... + 61317.

It is an arithmetic number, because the mean of its divisors is an integer number (64461510).

Almost surely, 2^257725583 is an apocalyptic number.

257725583 is a deficient number, since it is larger than the sum of its proper divisors (120457).

257725583 is a wasteful number, since it uses less digits than its factorization.

257725583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120456.

The product of its digits is 588000, while the sum is 44.

The square root of 257725583 is about 16053.8339034637. The cubic root of 257725583 is about 636.3838898767.

The spelling of 257725583 in words is "two hundred fifty-seven million, seven hundred twenty-five thousand, five hundred eighty-three".