257285605512 has 64 divisors (see below), whose sum is σ = 695717064000. Its totient is φ = 78819081984.

The previous prime is 257285605469. The next prime is 257285605513. The reversal of 257285605512 is 215506582752.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (257285605513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1729062 + ... + 1871957.

It is an arithmetic number, because the mean of its divisors is an integer number (10870579125).

Almost surely, 2^257285605512 is an apocalyptic number.

It is an amenable number.

257285605512 is an abundant number, since it is smaller than the sum of its proper divisors (438431458488).

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

257285605512 is a wasteful number, since it uses less digits than its factorization.

257285605512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3601270 (or 3601266 counting only the distinct ones).

The product of its (nonzero) digits is 1680000, while the sum is 48.

The spelling of 257285605512 in words is "two hundred fifty-seven billion, two hundred eighty-five million, six hundred five thousand, five hundred twelve".