25288117 has 2 divisors, whose sum is σ = 25288118. Its totient is φ = 25288116.

The previous prime is 25288079. The next prime is 25288127. The reversal of 25288117 is 71188252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24990001 + 298116 = 4999^2 + 546^2 .

It is a cyclic number.

It is not a de Polignac number, because 25288117 - 2⁷ = 25287989 is a prime.

It is a super-2 number, since 2×25288117² = 1278977722811378, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25288127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12644058 + 12644059.

It is an arithmetic number, because the mean of its divisors is an integer number (12644059).

Almost surely, 2^25288117 is an apocalyptic number.

It is an amenable number.

25288117 is a deficient number, since it is larger than the sum of its proper divisors (1).

25288117 is an equidigital number, since it uses as much as digits as its factorization.

25288117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8960, while the sum is 34.

The square root of 25288117 is about 5028.7291635164. The cubic root of 25288117 is about 293.5207650537.

The spelling of 25288117 in words is "twenty-five million, two hundred eighty-eight thousand, one hundred seventeen".