25281117 has 12 divisors (see below), whose sum is σ = 38105184. Its totient is φ = 16121160.

The previous prime is 25281107. The next prime is 25281121. The reversal of 25281117 is 71118252.

It is not a de Polignac number, because 25281117 - 2¹¹ = 25279069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25281107) 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, 60859 + ... + 61272.

It is an arithmetic number, because the mean of its divisors is an integer number (3175432).

Almost surely, 2^25281117 is an apocalyptic number.

It is an amenable number.

25281117 is a deficient number, since it is larger than the sum of its proper divisors (12824067).

25281117 is a wasteful number, since it uses less digits than its factorization.

25281117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122160 (or 122157 counting only the distinct ones).

The product of its digits is 1120, while the sum is 27.

The square root of 25281117 is about 5028.0331144494. The cubic root of 25281117 is about 293.4936794075.

Adding to 25281117 its reverse (71118252), we get a palindrome (96399369).

The spelling of 25281117 in words is "twenty-five million, two hundred eighty-one thousand, one hundred seventeen".