25397056 has 28 divisors (see below), whose sum is σ = 50909220. Its totient is φ = 12569600.

The previous prime is 25397041. The next prime is 25397077. The reversal of 25397056 is 65079352.

It can be written as a sum of positive squares in 2 ways, for example, as 15054400 + 10342656 = 3880^2 + 3216^2 .

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4500 + ... + 8428.

Almost surely, 2^25397056 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 25397056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25454610).

25397056 is an abundant number, since it is smaller than the sum of its proper divisors (25512164).

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

25397056 is a wasteful number, since it uses less digits than its factorization.

25397056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4042 (or 4032 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 37.

The square root of 25397056 is about 5039.5491861872. The cubic root of 25397056 is about 293.9416485303.

The spelling of 25397056 in words is "twenty-five million, three hundred ninety-seven thousand, fifty-six".