825244753381 has 4 divisors (see below), whose sum is σ = 825299671264. Its totient is φ = 825189835500.

The previous prime is 825244753363. The next prime is 825244753409. The reversal of 825244753381 is 183357442528.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 825244753381 - 2⁹ = 825244752869 is a prime.

It is a super-3 number, since 3×825244753381³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825244753981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27436395 + ... + 27466456.

It is an arithmetic number, because the mean of its divisors is an integer number (206324917816).

Almost surely, 2^825244753381 is an apocalyptic number.

It is an amenable number.

825244753381 is a deficient number, since it is larger than the sum of its proper divisors (54917883).

825244753381 is a wasteful number, since it uses less digits than its factorization.

825244753381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54917882.

The product of its digits is 6451200, while the sum is 52.

The spelling of 825244753381 in words is "eight hundred twenty-five billion, two hundred forty-four million, seven hundred fifty-three thousand, three hundred eighty-one".