25727825 has 6 divisors (see below), whose sum is σ = 31902534. Its totient is φ = 20582240.

The previous prime is 25727809. The next prime is 25727827. The reversal of 25727825 is 52872752.

It can be written as a sum of positive squares in 3 ways, for example, as 5764801 + 19963024 = 2401^2 + 4468^2 .

It is not a de Polignac number, because 25727825 - 2⁴ = 25727809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25727827) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 514532 + ... + 514581.

It is an arithmetic number, because the mean of its divisors is an integer number (5317089).

Almost surely, 2^25727825 is an apocalyptic number.

25727825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25727825 is a deficient number, since it is larger than the sum of its proper divisors (6174709).

25727825 is a wasteful number, since it uses less digits than its factorization.

25727825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029123 (or 1029118 counting only the distinct ones).

The product of its digits is 78400, while the sum is 38.

The square root of 25727825 is about 5072.2603442647. The cubic root of 25727825 is about 295.2122383434.

It can be divided in two parts, 257 and 27825, that added together give a palindrome (28082).

The spelling of 25727825 in words is "twenty-five million, seven hundred twenty-seven thousand, eight hundred twenty-five".