257249350132 has 24 divisors (see below), whose sum is σ = 454885872840. Its totient is φ = 127282298880.

The previous prime is 257249350079. The next prime is 257249350147. The reversal of 257249350132 is 231053942752.

It can be written as a sum of positive squares in 4 ways, for example, as 234824976 + 257014525156 = 15324^2 + 506966^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3325332 + ... + 3401812.

It is an arithmetic number, because the mean of its divisors is an integer number (18953578035).

Almost surely, 2^257249350132 is an apocalyptic number.

It is an amenable number.

257249350132 is a deficient number, since it is larger than the sum of its proper divisors (197636522708).

257249350132 is a wasteful number, since it uses less digits than its factorization.

257249350132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85251 (or 85249 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 43.

The spelling of 257249350132 in words is "two hundred fifty-seven billion, two hundred forty-nine million, three hundred fifty thousand, one hundred thirty-two".