25492249 has 4 divisors (see below), whose sum is σ = 26085136. Its totient is φ = 24899364.

The previous prime is 25492241. The next prime is 25492267. The reversal of 25492249 is 94229452.

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 25492249 - 2³ = 25492241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25492241) 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, 296379 + ... + 296464.

It is an arithmetic number, because the mean of its divisors is an integer number (6521284).

Almost surely, 2^25492249 is an apocalyptic number.

It is an amenable number.

25492249 is a deficient number, since it is larger than the sum of its proper divisors (592887).

25492249 is an equidigital number, since it uses as much as digits as its factorization.

25492249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592886.

The product of its digits is 51840, while the sum is 37.

The square root of 25492249 is about 5048.9849474919. The cubic root of 25492249 is about 294.3084403920.

The spelling of 25492249 in words is "twenty-five million, four hundred ninety-two thousand, two hundred forty-nine".