825402241 has 4 divisors (see below), whose sum is σ = 873955332. Its totient is φ = 776849152.

The previous prime is 825402229. The next prime is 825402251. The reversal of 825402241 is 142204528.

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 776458225 + 48944016 = 27865^2 + 6996^2 .

It is a cyclic number.

It is not a de Polignac number, because 825402241 - 2⁵ = 825402209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (825402251) 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, 24276520 + ... + 24276553.

It is an arithmetic number, because the mean of its divisors is an integer number (218488833).

Almost surely, 2^825402241 is an apocalyptic number.

It is an amenable number.

825402241 is a deficient number, since it is larger than the sum of its proper divisors (48553091).

825402241 is a wasteful number, since it uses less digits than its factorization.

825402241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48553090.

The product of its (nonzero) digits is 5120, while the sum is 28.

The square root of 825402241 is about 28729.8144964425. The cubic root of 825402241 is about 938.0411301092.

Adding to 825402241 its reverse (142204528), we get a palindrome (967606769).

The spelling of 825402241 in words is "eight hundred twenty-five million, four hundred two thousand, two hundred forty-one".