257012148 has 12 divisors (see below), whose sum is σ = 599695040. Its totient is φ = 85670712.

The previous prime is 257012141. The next prime is 257012159. The reversal of 257012148 is 841210752.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257012141) 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, 10708828 + ... + 10708851.

Almost surely, 2^257012148 is an apocalyptic number.

It is an amenable number.

257012148 is an abundant number, since it is smaller than the sum of its proper divisors (342682892).

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

257012148 is a wasteful number, since it uses less digits than its factorization.

257012148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21417686 (or 21417684 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 257012148 is about 16031.5984231143. The cubic root of 257012148 is about 635.7961353639.

The spelling of 257012148 in words is "two hundred fifty-seven million, twelve thousand, one hundred forty-eight".