25528369 has 8 divisors (see below), whose sum is σ = 26231040. Its totient is φ = 24830736.

The previous prime is 25528361. The next prime is 25528387. The reversal of 25528369 is 96382552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25528369 - 2³ = 25528361 is a prime.

It is a super-2 number, since 2×25528369² = 1303395247600322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25528361) 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, 10464 + ... + 12670.

It is an arithmetic number, because the mean of its divisors is an integer number (3278880).

Almost surely, 2^25528369 is an apocalyptic number.

It is an amenable number.

25528369 is a deficient number, since it is larger than the sum of its proper divisors (702671).

25528369 is a wasteful number, since it uses less digits than its factorization.

25528369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2519.

The product of its digits is 129600, while the sum is 40.

The square root of 25528369 is about 5052.5606379340. The cubic root of 25528369 is about 294.4473767940.

The spelling of 25528369 in words is "twenty-five million, five hundred twenty-eight thousand, three hundred sixty-nine".