25492849 has 4 divisors (see below), whose sum is σ = 25505280. Its totient is φ = 25480420.

The previous prime is 25492829. The next prime is 25492867. The reversal of 25492849 is 94829452.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 25492849 - 2⁷ = 25492721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25492829) 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, 2329 + ... + 7510.

It is an arithmetic number, because the mean of its divisors is an integer number (6376320).

Almost surely, 2^25492849 is an apocalyptic number.

It is an amenable number.

25492849 is a deficient number, since it is larger than the sum of its proper divisors (12431).

25492849 is an equidigital number, since it uses as much as digits as its factorization.

25492849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12430.

The product of its digits is 207360, while the sum is 43.

The square root of 25492849 is about 5049.0443650259. The cubic root of 25492849 is about 294.3107493772.

The spelling of 25492849 in words is "twenty-five million, four hundred ninety-two thousand, eight hundred forty-nine".