25628849 has 2 divisors, whose sum is σ = 25628850. Its totient is φ = 25628848.

The previous prime is 25628807. The next prime is 25628873. The reversal of 25628849 is 94882652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25000000 + 628849 = 5000^2 + 793^2 .

It is a cyclic number.

It is not a de Polignac number, because 25628849 - 2⁸ = 25628593 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25628899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12814424 + 12814425.

It is an arithmetic number, because the mean of its divisors is an integer number (12814425).

Almost surely, 2^25628849 is an apocalyptic number.

It is an amenable number.

25628849 is a deficient number, since it is larger than the sum of its proper divisors (1).

25628849 is an equidigital number, since it uses as much as digits as its factorization.

25628849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 276480, while the sum is 44.

The square root of 25628849 is about 5062.4943456759. The cubic root of 25628849 is about 294.8331873148.

It can be divided in two parts, 2562 and 8849, that added together give a palindrome (11411).

The spelling of 25628849 in words is "twenty-five million, six hundred twenty-eight thousand, eight hundred forty-nine".