825645941 has 4 divisors (see below), whose sum is σ = 839640000. Its totient is φ = 811651884.

The previous prime is 825645917. The next prime is 825645959. The reversal of 825645941 is 149546528.

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 a de Polignac number, because none of the positive numbers 2^k-825645941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 825645892 and 825645901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825645911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6996941 + ... + 6997058.

It is an arithmetic number, because the mean of its divisors is an integer number (209910000).

Almost surely, 2^825645941 is an apocalyptic number.

It is an amenable number.

825645941 is a deficient number, since it is larger than the sum of its proper divisors (13994059).

825645941 is a wasteful number, since it uses less digits than its factorization.

825645941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13994058.

The product of its digits is 345600, while the sum is 44.

The square root of 825645941 is about 28734.0554220945. The cubic root of 825645941 is about 938.1334399018.

The spelling of 825645941 in words is "eight hundred twenty-five million, six hundred forty-five thousand, nine hundred forty-one".