25284381 has 8 divisors (see below), whose sum is σ = 33764064. Its totient is φ = 16830480.

The previous prime is 25284367. The next prime is 25284401. The reversal of 25284381 is 18348252.

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

It is not a de Polignac number, because 25284381 - 2⁵ = 25284349 is a prime.

It is a super-2 number, since 2×25284381² = 1278599845106322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25284361) 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 7 ways as a sum of consecutive naturals, for example, 4026 + ... + 8171.

It is an arithmetic number, because the mean of its divisors is an integer number (4220508).

Almost surely, 2^25284381 is an apocalyptic number.

It is an amenable number.

25284381 is a deficient number, since it is larger than the sum of its proper divisors (8479683).

25284381 is a wasteful number, since it uses less digits than its factorization.

25284381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12891.

The product of its digits is 15360, while the sum is 33.

The square root of 25284381 is about 5028.3576841748. The cubic root of 25284381 is about 293.5063096794.

The spelling of 25284381 in words is "twenty-five million, two hundred eighty-four thousand, three hundred eighty-one".