25152217 has 4 divisors (see below), whose sum is σ = 25284096. Its totient is φ = 25020340.

The previous prime is 25152209. The next prime is 25152289. The reversal of 25152217 is 71225152.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25152217 - 2³ = 25152209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25152191 and 25152200.

It is not an unprimeable number, because it can be changed into a prime (25162217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65653 + ... + 66034.

It is an arithmetic number, because the mean of its divisors is an integer number (6321024).

Almost surely, 2^25152217 is an apocalyptic number.

It is an amenable number.

25152217 is a deficient number, since it is larger than the sum of its proper divisors (131879).

25152217 is a wasteful number, since it uses less digits than its factorization.

25152217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131878.

The product of its digits is 1400, while the sum is 25.

The square root of 25152217 is about 5015.1986002550. The cubic root of 25152217 is about 292.9940203868.

Adding to 25152217 its reverse (71225152), we get a palindrome (96377369).

It can be divided in two parts, 2515 and 2217, that multiplied together give a palindrome (5575755).

The spelling of 25152217 in words is "twenty-five million, one hundred fifty-two thousand, two hundred seventeen".