257025500 has 24 divisors (see below), whose sum is σ = 561344784. Its totient is φ = 102810000.

The previous prime is 257025493. The next prime is 257025511. The reversal of 257025500 is 5520752.

It is a self number, because there is not a number n which added to its sum of digits gives 257025500.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 256526 + ... + 257525.

It is an arithmetic number, because the mean of its divisors is an integer number (23389366).

Almost surely, 2^257025500 is an apocalyptic number.

257025500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

257025500 is an abundant number, since it is smaller than the sum of its proper divisors (304319284).

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

257025500 is a wasteful number, since it uses less digits than its factorization.

257025500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514070 (or 514058 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 26.

The square root of 257025500 is about 16032.0148453025. The cubic root of 257025500 is about 635.8071452235.

The spelling of 257025500 in words is "two hundred fifty-seven million, twenty-five thousand, five hundred".