25329528 has 96 divisors (see below), whose sum is σ = 81151200. Its totient is φ = 6983424.

The previous prime is 25329523. The next prime is 25329539. The reversal of 25329528 is 82592352.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 25329492 and 25329501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25329523) 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, 13750 + ... + 15482.

It is an arithmetic number, because the mean of its divisors is an integer number (845325).

Almost surely, 2^25329528 is an apocalyptic number.

25329528 is a gapful number since it is divisible by the number (28) 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 25329528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40575600).

25329528 is an abundant number, since it is smaller than the sum of its proper divisors (55821672).

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

25329528 is a wasteful number, since it uses less digits than its factorization.

25329528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1781 (or 1774 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 25329528 is about 5032.8449211157. The cubic root of 25329528 is about 293.6808977036.

The spelling of 25329528 in words is "twenty-five million, three hundred twenty-nine thousand, five hundred twenty-eight".