25288563 has 8 divisors (see below), whose sum is σ = 35492800. Its totient is φ = 15971688.

The previous prime is 25288559. The next prime is 25288573. The reversal of 25288563 is 36588252.

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

It is not a de Polignac number, because 25288563 - 2² = 25288559 is a prime.

It is a super-3 number, since 3×25288563³ (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 not an unprimeable number, because it can be changed into a prime (25288553) 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, 221773 + ... + 221886.

It is an arithmetic number, because the mean of its divisors is an integer number (4436600).

Almost surely, 2^25288563 is an apocalyptic number.

25288563 is a deficient number, since it is larger than the sum of its proper divisors (10204237).

25288563 is a wasteful number, since it uses less digits than its factorization.

25288563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443681.

The product of its digits is 115200, while the sum is 39.

The square root of 25288563 is about 5028.7735085207. The cubic root of 25288563 is about 293.5224906269.

The spelling of 25288563 in words is "twenty-five million, two hundred eighty-eight thousand, five hundred sixty-three".