256682500 has 30 divisors (see below), whose sum is σ = 561318758. Its totient is φ = 102672000.

The previous prime is 256682479. The next prime is 256682501. The reversal of 256682500 is 5286652.

It can be written as a sum of positive squares in 5 ways, for example, as 61968384 + 194714116 = 7872^2 + 13954^2 .

It is not an unprimeable number, because it can be changed into a prime (256682501) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 48837 + ... + 53836.

Almost surely, 2^256682500 is an apocalyptic number.

256682500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256682500 is an abundant number, since it is smaller than the sum of its proper divisors (304636258).

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

256682500 is a wasteful number, since it uses less digits than its factorization.

256682500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102697 (or 102680 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 256682500 is about 16021.3139286389. The cubic root of 256682500 is about 635.5241915442.

The spelling of 256682500 in words is "two hundred fifty-six million, six hundred eighty-two thousand, five hundred".