257512016 has 20 divisors (see below), whose sum is σ = 525189600. Its totient is φ = 121979232.

The previous prime is 257511983. The next prime is 257512019. The reversal of 257512016 is 610215752.

It is a self number, because there is not a number n which added to its sum of digits gives 257512016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257512019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 423236 + ... + 423843.

It is an arithmetic number, because the mean of its divisors is an integer number (26259480).

Almost surely, 2^257512016 is an apocalyptic number.

It is an amenable number.

257512016 is an abundant number, since it is smaller than the sum of its proper divisors (267677584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

257512016 is a wasteful number, since it uses less digits than its factorization.

257512016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847106 (or 847100 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 257512016 is about 16047.1809362268. The cubic root of 257512016 is about 636.2080592443.

Adding to 257512016 its reverse (610215752), we get a palindrome (867727768).

The spelling of 257512016 in words is "two hundred fifty-seven million, five hundred twelve thousand, sixteen".