25428841 has 4 divisors (see below), whose sum is σ = 25691092. Its totient is φ = 25166592.

The previous prime is 25428811. The next prime is 25428857. The reversal of 25428841 is 14882452.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21123216 + 4305625 = 4596^2 + 2075^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25428841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25428797 and 25428806.

It is not an unprimeable number, because it can be changed into a prime (25428811) 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, 130980 + ... + 131173.

It is an arithmetic number, because the mean of its divisors is an integer number (6422773).

Almost surely, 2^25428841 is an apocalyptic number.

It is an amenable number.

25428841 is a deficient number, since it is larger than the sum of its proper divisors (262251).

25428841 is an equidigital number, since it uses as much as digits as its factorization.

25428841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262250.

The product of its digits is 20480, while the sum is 34.

The square root of 25428841 is about 5042.7017560034. The cubic root of 25428841 is about 294.0642223222.

The spelling of 25428841 in words is "twenty-five million, four hundred twenty-eight thousand, eight hundred forty-one".