25574849 has 4 divisors (see below), whose sum is σ = 25585236. Its totient is φ = 25564464.

The previous prime is 25574837. The next prime is 25574869. The reversal of 25574849 is 94847552.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 21298225 + 4276624 = 4615^2 + 2068^2 .

It is a cyclic number.

It is not a de Polignac number, because 25574849 - 2¹⁶ = 25509313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25574869) 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, 827 + ... + 7199.

It is an arithmetic number, because the mean of its divisors is an integer number (6396309).

Almost surely, 2^25574849 is an apocalyptic number.

It is an amenable number.

25574849 is a deficient number, since it is larger than the sum of its proper divisors (10387).

25574849 is an equidigital number, since it uses as much as digits as its factorization.

25574849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10386.

The product of its digits is 403200, while the sum is 44.

The square root of 25574849 is about 5057.1581940849. The cubic root of 25574849 is about 294.6259704779.

The spelling of 25574849 in words is "twenty-five million, five hundred seventy-four thousand, eight hundred forty-nine".