25532217 has 12 divisors (see below), whose sum is σ = 37779924. Its totient is φ = 16606080.

The previous prime is 25532161. The next prime is 25532281. The reversal of 25532217 is 71223552.

It can be written as a sum of positive squares in 2 ways, for example, as 8590761 + 16941456 = 2931^2 + 4116^2 .

It is not a de Polignac number, because 25532217 - 2¹⁵ = 25499449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25531217) 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 11 ways as a sum of consecutive naturals, for example, 34228 + ... + 34965.

It is an arithmetic number, because the mean of its divisors is an integer number (3148327).

Almost surely, 2^25532217 is an apocalyptic number.

It is an amenable number.

25532217 is a deficient number, since it is larger than the sum of its proper divisors (12247707).

25532217 is a wasteful number, since it uses less digits than its factorization.

25532217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69240 (or 69237 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 25532217 is about 5052.9414205985. The cubic root of 25532217 is about 294.4621704872.

Adding to 25532217 its reverse (71223552), we get a palindrome (96755769).

The spelling of 25532217 in words is "twenty-five million, five hundred thirty-two thousand, two hundred seventeen".