25472217 has 8 divisors (see below), whose sum is σ = 35750560. Its totient is φ = 16087680.

The previous prime is 25472203. The next prime is 25472221. The reversal of 25472217 is 71227452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25472217 - 2⁸ = 25471961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25472257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223384 + ... + 223497.

It is an arithmetic number, because the mean of its divisors is an integer number (4468820).

Almost surely, 2^25472217 is an apocalyptic number.

It is an amenable number.

25472217 is a deficient number, since it is larger than the sum of its proper divisors (10278343).

25472217 is a wasteful number, since it uses less digits than its factorization.

25472217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446903.

The product of its digits is 7840, while the sum is 30.

The square root of 25472217 is about 5047.0007925500. Note that the first 3 decimals coincide. The cubic root of 25472217 is about 294.2313302657.

Adding to 25472217 its reverse (71227452), we get a palindrome (96699669).

The spelling of 25472217 in words is "twenty-five million, four hundred seventy-two thousand, two hundred seventeen".