25238287 has 4 divisors (see below), whose sum is σ = 25249000. Its totient is φ = 25227576.

The previous prime is 25238281. The next prime is 25238293. The reversal of 25238287 is 78283252.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (25238281) and next prime (25238293).

It is a cyclic number.

It is not a de Polignac number, because 25238287 - 2⁷ = 25238159 is a prime.

It is a super-2 number, since 2×25238287² = 1273942261388738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25238281) 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 3 ways as a sum of consecutive naturals, for example, 108 + ... + 7105.

It is an arithmetic number, because the mean of its divisors is an integer number (6312250).

Almost surely, 2^25238287 is an apocalyptic number.

25238287 is a deficient number, since it is larger than the sum of its proper divisors (10713).

25238287 is an equidigital number, since it uses as much as digits as its factorization.

25238287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10712.

The product of its digits is 53760, while the sum is 37.

The square root of 25238287 is about 5023.7721883063. The cubic root of 25238287 is about 293.3278449673.

The spelling of 25238287 in words is "twenty-five million, two hundred thirty-eight thousand, two hundred eighty-seven".