25245249 has 4 divisors (see below), whose sum is σ = 33660336. Its totient is φ = 16830164.

The previous prime is 25245247. The next prime is 25245271. The reversal of 25245249 is 94254252.

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 25245249 - 2¹ = 25245247 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25245247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4207539 + ... + 4207544.

It is an arithmetic number, because the mean of its divisors is an integer number (8415084).

Almost surely, 2^25245249 is an apocalyptic number.

It is an amenable number.

25245249 is a deficient number, since it is larger than the sum of its proper divisors (8415087).

25245249 is an equidigital number, since it uses as much as digits as its factorization.

25245249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8415086.

The product of its digits is 28800, while the sum is 33.

The square root of 25245249 is about 5024.4650461517. The cubic root of 25245249 is about 293.3548140548.

The spelling of 25245249 in words is "twenty-five million, two hundred forty-five thousand, two hundred forty-nine".