825850381 has 4 divisors (see below), whose sum is σ = 833427100. Its totient is φ = 818273664.

The previous prime is 825850379. The next prime is 825850427. The reversal of 825850381 is 183058528.

825850381 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.

It can be written as a sum of positive squares in 2 ways, for example, as 648720900 + 177129481 = 25470^2 + 13309^2 .

It is a cyclic number.

It is not a de Polignac number, because 825850381 - 2¹ = 825850379 is a prime.

It is a super-2 number, since 2×825850381² = 1364057703595690322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825850321) 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, 3788196 + ... + 3788413.

It is an arithmetic number, because the mean of its divisors is an integer number (208356775).

Almost surely, 2^825850381 is an apocalyptic number.

It is an amenable number.

825850381 is a deficient number, since it is larger than the sum of its proper divisors (7576719).

825850381 is a wasteful number, since it uses less digits than its factorization.

825850381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7576718.

The product of its (nonzero) digits is 76800, while the sum is 40.

The square root of 825850381 is about 28737.6126531067. The cubic root of 825850381 is about 938.2108646037.

The spelling of 825850381 in words is "eight hundred twenty-five million, eight hundred fifty thousand, three hundred eighty-one".