25288469 has 4 divisors (see below), whose sum is σ = 26776044. Its totient is φ = 23800896.

The previous prime is 25288463. The next prime is 25288507. The reversal of 25288469 is 96488252.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16703569 + 8584900 = 4087^2 + 2930^2 .

It is a cyclic number.

It is not a de Polignac number, because 25288469 - 2⁸ = 25288213 is a prime.

It is a super-3 number, since 3×25288469³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25288463) 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, 743762 + ... + 743795.

It is an arithmetic number, because the mean of its divisors is an integer number (6694011).

Almost surely, 2^25288469 is an apocalyptic number.

It is an amenable number.

25288469 is a deficient number, since it is larger than the sum of its proper divisors (1487575).

25288469 is a wasteful number, since it uses less digits than its factorization.

25288469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1487574.

The product of its digits is 276480, while the sum is 44.

The square root of 25288469 is about 5028.7641622967. The cubic root of 25288469 is about 293.5221269427.

The spelling of 25288469 in words is "twenty-five million, two hundred eighty-eight thousand, four hundred sixty-nine".