25328529 has 24 divisors (see below), whose sum is σ = 37975392. Its totient is φ = 16255680.

The previous prime is 25328509. The next prime is 25328549. The reversal of 25328529 is 92582352.

It is an interprime number because it is at equal distance from previous prime (25328509) and next prime (25328549).

It is not a de Polignac number, because 25328529 - 2¹² = 25324433 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 25328493 and 25328502.

It is not an unprimeable number, because it can be changed into a prime (25328509) 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, 30214 + ... + 31040.

It is an arithmetic number, because the mean of its divisors is an integer number (1582308).

Almost surely, 2^25328529 is an apocalyptic number.

It is an amenable number.

25328529 is a deficient number, since it is larger than the sum of its proper divisors (12646863).

25328529 is a wasteful number, since it uses less digits than its factorization.

25328529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957 (or 954 counting only the distinct ones).

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

The square root of 25328529 is about 5032.7456720959. The cubic root of 25328529 is about 293.6770367147.

It can be divided in two parts, 253 and 28529, that added together give a palindrome (28782).

The spelling of 25328529 in words is "twenty-five million, three hundred twenty-eight thousand, five hundred twenty-nine".