25287969 has 12 divisors (see below), whose sum is σ = 39222384. Its totient is φ = 14450184.

The previous prime is 25287967. The next prime is 25287989. The reversal of 25287969 is 96978252.

It is not a de Polignac number, because 25287969 - 2¹ = 25287967 is a prime.

It is a super-3 number, since 3×25287969³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (25287967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85867 + ... + 86160.

It is an arithmetic number, because the mean of its divisors is an integer number (3268532).

Almost surely, 2^25287969 is an apocalyptic number.

It is an amenable number.

25287969 is a deficient number, since it is larger than the sum of its proper divisors (13934415).

25287969 is a wasteful number, since it uses less digits than its factorization.

25287969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172044 (or 172037 counting only the distinct ones).

The product of its digits is 544320, while the sum is 48.

The square root of 25287969 is about 5028.7144480473. The cubic root of 25287969 is about 293.5201924374.

The spelling of 25287969 in words is "twenty-five million, two hundred eighty-seven thousand, nine hundred sixty-nine".