25481117 has 2 divisors, whose sum is σ = 25481118. Its totient is φ = 25481116.

The previous prime is 25481107. The next prime is 25481129. The reversal of 25481117 is 71118452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20557156 + 4923961 = 4534^2 + 2219^2 .

It is a cyclic number.

It is not a de Polignac number, because 25481117 - 2²² = 21286813 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25481117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25481107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12740558 + 12740559.

It is an arithmetic number, because the mean of its divisors is an integer number (12740559).

Almost surely, 2^25481117 is an apocalyptic number.

It is an amenable number.

25481117 is a deficient number, since it is larger than the sum of its proper divisors (1).

25481117 is an equidigital number, since it uses as much as digits as its factorization.

25481117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2240, while the sum is 29.

The square root of 25481117 is about 5047.8824273154. The cubic root of 25481117 is about 294.2655944461.

Adding to 25481117 its reverse (71118452), we get a palindrome (96599569).

The spelling of 25481117 in words is "twenty-five million, four hundred eighty-one thousand, one hundred seventeen".