25472249 has 4 divisors (see below), whose sum is σ = 27787920. Its totient is φ = 23156580.

The previous prime is 25472231. The next prime is 25472257. The reversal of 25472249 is 94227452.

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 a de Polignac number, because none of the positive numbers 2^k-25472249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25472299) 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 3 ways as a sum of consecutive naturals, for example, 1157819 + ... + 1157840.

It is an arithmetic number, because the mean of its divisors is an integer number (6946980).

Almost surely, 2^25472249 is an apocalyptic number.

It is an amenable number.

25472249 is a deficient number, since it is larger than the sum of its proper divisors (2315671).

25472249 is a wasteful number, since it uses less digits than its factorization.

25472249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2315670.

The product of its digits is 40320, while the sum is 35.

The square root of 25472249 is about 5047.0039627486. The cubic root of 25472249 is about 294.2314534771.

It can be divided in two parts, 25 and 472249, that added together give a palindrome (472274).

The spelling of 25472249 in words is "twenty-five million, four hundred seventy-two thousand, two hundred forty-nine".