25520328 has 48 divisors (see below), whose sum is σ = 70733520. Its totient is φ = 8307936.

The previous prime is 25520321. The next prime is 25520329. The reversal of 25520328 is 82302552.

It is not an unprimeable number, because it can be changed into a prime (25520321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1026 + ... + 7217.

It is an arithmetic number, because the mean of its divisors is an integer number (1473615).

Almost surely, 2^25520328 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 25520328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35366760).

25520328 is an abundant number, since it is smaller than the sum of its proper divisors (45213192).

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

25520328 is a wasteful number, since it uses less digits than its factorization.

25520328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8298 (or 8291 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 25520328 is about 5051.7648401326. The cubic root of 25520328 is about 294.4164582501.

The spelling of 25520328 in words is "twenty-five million, five hundred twenty thousand, three hundred twenty-eight".