1256351010 has 16 divisors (see below), whose sum is σ = 3015242496. Its totient is φ = 335026928.

The previous prime is 1256351009. The next prime is 1256351023. The reversal of 1256351010 is 101536521.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20939154 + ... + 20939213.

It is an arithmetic number, because the mean of its divisors is an integer number (188452656).

Almost surely, 2^1256351010 is an apocalyptic number.

1256351010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1256351010 is an abundant number, since it is smaller than the sum of its proper divisors (1758891486).

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

1256351010 is a wasteful number, since it uses less digits than its factorization.

1256351010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41878377.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 1256351010 is about 35445.0421074655. The cubic root of 1256351010 is about 1079.0386421043.

Adding to 1256351010 its reverse (101536521), we get a palindrome (1357887531).

The spelling of 1256351010 in words is "one billion, two hundred fifty-six million, three hundred fifty-one thousand, ten".