257025996 has 54 divisors (see below), whose sum is σ = 685017060. Its totient is φ = 81033696.

The previous prime is 257025983. The next prime is 257026031. The reversal of 257025996 is 699520752.

257025996 is a `hidden beast` number, since 2 + 57 + 0 + 2 + 599 + 6 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 418986 + ... + 419598.

Almost surely, 2^257025996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 257025996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (342508530).

257025996 is an abundant number, since it is smaller than the sum of its proper divisors (427991064).

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

257025996 is a wasteful number, since it uses less digits than its factorization.

257025996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1255 (or 637 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 45.

The square root of 257025996 is about 16032.0303143426. The cubic root of 257025996 is about 635.8075542104.

The spelling of 257025996 in words is "two hundred fifty-seven million, twenty-five thousand, nine hundred ninety-six".