2525256 has 56 divisors (see below), whose sum is σ = 7115430. Its totient is φ = 839808.

The previous prime is 2525249. The next prime is 2525267. The reversal of 2525256 is 6525252.

It can be written as a sum of positive squares in only one way, i.e., 2452356 + 72900 = 1566^2 + 270^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 5616 + ... + 6048.

2^2525256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2525256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3557715).

2525256 is an abundant number, since it is smaller than the sum of its proper divisors (4590174).

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

2525256 is an equidigital number, since it uses as much as digits as its factorization.

2525256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457 (or 438 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 2525256 is about 1589.1054087127. The cubic root of 2525256 is about 136.1763859001.

2525256 divided by its sum of digits (27) gives a triangular number (93528 = T₄₃₂).

It can be divided in two parts, 25 and 25256, that added together give a square (25281 = 159²).

The spelling of 2525256 in words is "two million, five hundred twenty-five thousand, two hundred fifty-six".