25444256 has 48 divisors (see below), whose sum is σ = 52835328. Its totient is φ = 12038400.

The previous prime is 25444253. The next prime is 25444267. The reversal of 25444256 is 65244452.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (25444253) 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, 133121 + ... + 133311.

It is an arithmetic number, because the mean of its divisors is an integer number (1100736).

Almost surely, 2^25444256 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 25444256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26417664).

25444256 is an abundant number, since it is smaller than the sum of its proper divisors (27391072).

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

25444256 is a wasteful number, since it uses less digits than its factorization.

25444256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405 (or 397 counting only the distinct ones).

The product of its digits is 38400, while the sum is 32.

The square root of 25444256 is about 5044.2299709668. The cubic root of 25444256 is about 294.1236310375.

The spelling of 25444256 in words is "twenty-five million, four hundred forty-four thousand, two hundred fifty-six".