256410250 has 16 divisors (see below), whose sum is σ = 480000456. Its totient is φ = 102564000.

The previous prime is 256410241. The next prime is 256410251. The reversal of 256410250 is 52014652.

It can be written as a sum of positive squares in 4 ways, for example, as 23145721 + 233264529 = 4811^2 + 15273^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (256410251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 512571 + ... + 513070.

Almost surely, 2^256410250 is an apocalyptic number.

256410250 is a deficient number, since it is larger than the sum of its proper divisors (223590206).

256410250 is a wasteful number, since it uses less digits than its factorization.

256410250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025658 (or 1025648 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 256410250 is about 16012.8151803485. The cubic root of 256410250 is about 635.2994227229.

The spelling of 256410250 in words is "two hundred fifty-six million, four hundred ten thousand, two hundred fifty".