825144261 has 8 divisors (see below), whose sum is σ = 1101618720. Its totient is φ = 549382992.

The previous prime is 825144239. The next prime is 825144277. The reversal of 825144261 is 162441528.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 825144261 - 2⁶ = 825144197 is a prime.

It is a super-2 number, since 2×825144261² = 1361726102922472242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825149261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175591 + ... + 180228.

It is an arithmetic number, because the mean of its divisors is an integer number (137702340).

Almost surely, 2^825144261 is an apocalyptic number.

It is an amenable number.

825144261 is a deficient number, since it is larger than the sum of its proper divisors (276474459).

825144261 is a wasteful number, since it uses less digits than its factorization.

825144261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356595.

The product of its digits is 15360, while the sum is 33.

The square root of 825144261 is about 28725.3243845914. The cubic root of 825144261 is about 937.9433914734.

Adding to 825144261 its reverse (162441528), we get a palindrome (987585789).

The spelling of 825144261 in words is "eight hundred twenty-five million, one hundred forty-four thousand, two hundred sixty-one".