25720576 has 72 divisors (see below), whose sum is σ = 60698624. Its totient is φ = 10644480.

The previous prime is 25720561. The next prime is 25720577. The reversal of 25720576 is 67502752.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25720577) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55321 + ... + 55783.

Almost surely, 2^25720576 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 25720576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30349312).

25720576 is an abundant number, since it is smaller than the sum of its proper divisors (34978048).

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

25720576 is an equidigital number, since it uses as much as digits as its factorization.

25720576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517 (or 503 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 25720576 is about 5071.5457209809. The cubic root of 25720576 is about 295.1845096809.

The spelling of 25720576 in words is "twenty-five million, seven hundred twenty thousand, five hundred seventy-six".