25481256 has 64 divisors (see below), whose sum is σ = 68083200. Its totient is φ = 7929600.

The previous prime is 25481243. The next prime is 25481297. The reversal of 25481256 is 65218452.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20986 + ... + 22166.

It is an arithmetic number, because the mean of its divisors is an integer number (1063800).

Almost surely, 2^25481256 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 25481256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34041600).

25481256 is an abundant number, since it is smaller than the sum of its proper divisors (42601944).

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

25481256 is a wasteful number, since it uses less digits than its factorization.

25481256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250 (or 1246 counting only the distinct ones).

The product of its digits is 19200, while the sum is 33.

The square root of 25481256 is about 5047.8961954462. The cubic root of 25481256 is about 294.2661295200.

The spelling of 25481256 in words is "twenty-five million, four hundred eighty-one thousand, two hundred fifty-six".