257885953 has 4 divisors (see below), whose sum is σ = 277723348. Its totient is φ = 238048560.

The previous prime is 257885939. The next prime is 257885981. The reversal of 257885953 is 359588752.

257885953 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 73822464 + 184063489 = 8592^2 + 13567^2 .

It is a cyclic number.

It is not a de Polignac number, because 257885953 - 2¹³ = 257877761 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 257885953.

It is not an unprimeable number, because it can be changed into a prime (257885933) 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, 9918678 + ... + 9918703.

It is an arithmetic number, because the mean of its divisors is an integer number (69430837).

Almost surely, 2^257885953 is an apocalyptic number.

It is an amenable number.

257885953 is a deficient number, since it is larger than the sum of its proper divisors (19837395).

257885953 is a wasteful number, since it uses less digits than its factorization.

257885953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19837394.

The product of its digits is 3024000, while the sum is 52.

The square root of 257885953 is about 16058.8278837529. The cubic root of 257885953 is about 636.5158593436.

The spelling of 257885953 in words is "two hundred fifty-seven million, eight hundred eighty-five thousand, nine hundred fifty-three".