257200255 has 24 divisors (see below), whose sum is σ = 340573248. Its totient is φ = 186316416.

The previous prime is 257200249. The next prime is 257200271. The reversal of 257200255 is 552002752.

It is not a de Polignac number, because 257200255 - 2³ = 257200247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41914 + ... + 47656.

It is an arithmetic number, because the mean of its divisors is an integer number (14190552).

Almost surely, 2^257200255 is an apocalyptic number.

257200255 is a deficient number, since it is larger than the sum of its proper divisors (83372993).

257200255 is a wasteful number, since it uses less digits than its factorization.

257200255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5827 (or 5814 counting only the distinct ones).

The product of its (nonzero) digits is 7000, while the sum is 28.

The square root of 257200255 is about 16037.4641075202. The cubic root of 257200255 is about 635.9512104432.

The spelling of 257200255 in words is "two hundred fifty-seven million, two hundred thousand, two hundred fifty-five".