256413250 has 16 divisors (see below), whose sum is σ = 480006072. Its totient is φ = 102565200.

The previous prime is 256413229. The next prime is 256413259. The reversal of 256413250 is 52314652.

It can be written as a sum of positive squares in 4 ways, for example, as 107060409 + 149352841 = 10347^2 + 12221^2 .

It is not an unprimeable number, because it can be changed into a prime (256413259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 512577 + ... + 513076.

Almost surely, 2^256413250 is an apocalyptic number.

256413250 is a deficient number, since it is larger than the sum of its proper divisors (223592822).

256413250 is a wasteful number, since it uses less digits than its factorization.

256413250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025670 (or 1025660 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 256413250 is about 16012.9088550457. The cubic root of 256413250 is about 635.3019003811.

The spelling of 256413250 in words is "two hundred fifty-six million, four hundred thirteen thousand, two hundred fifty".