825644141 has 4 divisors (see below), whose sum is σ = 943593312. Its totient is φ = 707694972.

The previous prime is 825644059. The next prime is 825644167. The reversal of 825644141 is 141446528.

825644141 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 825644141 - 2²⁶ = 758535277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825644641) 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, 58974575 + ... + 58974588.

It is an arithmetic number, because the mean of its divisors is an integer number (235898328).

Almost surely, 2^825644141 is an apocalyptic number.

It is an amenable number.

825644141 is a deficient number, since it is larger than the sum of its proper divisors (117949171).

825644141 is a wasteful number, since it uses less digits than its factorization.

825644141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117949170.

The product of its digits is 30720, while the sum is 35.

The square root of 825644141 is about 28734.0241003588. The cubic root of 825644141 is about 938.1327581562.

The spelling of 825644141 in words is "eight hundred twenty-five million, six hundred forty-four thousand, one hundred forty-one".