25000249 has 4 divisors (see below), whose sum is σ = 25080436. Its totient is φ = 24920064.

The previous prime is 25000231. The next prime is 25000267. The reversal of 25000249 is 94200052.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (25000231) and next prime (25000267).

It can be written as a sum of positive squares in 2 ways, for example, as 921600 + 24078649 = 960^2 + 4907^2 .

It is a 5-Lehmer number, since φ(25000249) divides (25000249-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 25000249 - 2¹⁷ = 24869177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25000279) 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, 39624 + ... + 40249.

It is an arithmetic number, because the mean of its divisors is an integer number (6270109).

Almost surely, 2^25000249 is an apocalyptic number.

It is an amenable number.

25000249 is a deficient number, since it is larger than the sum of its proper divisors (80187).

25000249 is an equidigital number, since it uses as much as digits as its factorization.

25000249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80186.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 25000249 is about 5000.0248999380. The cubic root of 25000249 is about 292.4027445920.

The spelling of 25000249 in words is "twenty-five million, two hundred forty-nine", and thus it is an aban number.