25081249 has 4 divisors (see below), whose sum is σ = 25455664. Its totient is φ = 24706836.

The previous prime is 25081241. The next prime is 25081253. The reversal of 25081249 is 94218052.

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 25081249 - 2³ = 25081241 is a prime.

It is a super-3 number, since 3×25081249³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25081249.

It is not an unprimeable number, because it can be changed into a prime (25081241) 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, 187107 + ... + 187240.

It is an arithmetic number, because the mean of its divisors is an integer number (6363916).

Almost surely, 2^25081249 is an apocalyptic number.

It is an amenable number.

25081249 is a deficient number, since it is larger than the sum of its proper divisors (374415).

25081249 is an equidigital number, since it uses as much as digits as its factorization.

25081249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374414.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 25081249 is about 5008.1183093054. The cubic root of 25081249 is about 292.7181959716.

The spelling of 25081249 in words is "twenty-five million, eighty-one thousand, two hundred forty-nine".