25528567 has 4 divisors (see below), whose sum is σ = 26071776. Its totient is φ = 24985360.

The previous prime is 25528549. The next prime is 25528579. The reversal of 25528567 is 76582552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25528567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25528537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271534 + ... + 271627.

It is an arithmetic number, because the mean of its divisors is an integer number (6517944).

Almost surely, 2^25528567 is an apocalyptic number.

25528567 is a deficient number, since it is larger than the sum of its proper divisors (543209).

25528567 is an equidigital number, since it uses as much as digits as its factorization.

25528567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543208.

The product of its digits is 168000, while the sum is 40.

The square root of 25528567 is about 5052.5802319211. The cubic root of 25528567 is about 294.4481380442.

The spelling of 25528567 in words is "twenty-five million, five hundred twenty-eight thousand, five hundred sixty-seven".