25056720 has 120 divisors (see below), whose sum is σ = 90655656. Its totient is φ = 6165504.

The previous prime is 25056701. The next prime is 25056721. The reversal of 25056720 is 2765052.

It can be written as a sum of positive squares in 4 ways, for example, as 968256 + 24088464 = 984^2 + 4908^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25056721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8022 + ... + 10698.

Almost surely, 2^25056720 is an apocalyptic number.

25056720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25056720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45327828).

25056720 is an abundant number, since it is smaller than the sum of its proper divisors (65598936).

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

25056720 is a wasteful number, since it uses less digits than its factorization.

25056720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2709 (or 2700 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 25056720 is about 5005.6687864860. The cubic root of 25056720 is about 292.6227405105.

The spelling of 25056720 in words is "twenty-five million, fifty-six thousand, seven hundred twenty".