1025256 has 16 divisors (see below), whose sum is σ = 2563200. Its totient is φ = 341744.

The previous prime is 1025239. The next prime is 1025257. The reversal of 1025256 is 6525201.

It is a super-2 number, since 2×1025256² = 2102299731072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1025257) 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 3 ways as a sum of consecutive naturals, for example, 21336 + ... + 21383.

It is an arithmetic number, because the mean of its divisors is an integer number (160200).

2^1025256 is an apocalyptic number.

It is an amenable number.

1025256 is an abundant number, since it is smaller than the sum of its proper divisors (1537944).

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

1025256 is a wasteful number, since it uses less digits than its factorization.

1025256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42728 (or 42724 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 1025256 is about 1012.5492580611. The cubic root of 1025256 is about 100.8348770719.

Subtracting 1025256 from its reverse (6525201), we obtain a palindrome (5499945).

The spelling of 1025256 in words is "one million, twenty-five thousand, two hundred fifty-six".