831747425 has 18 divisors (see below), whose sum is σ = 1037668518. Its totient is φ = 661351680.

The previous prime is 831747403. The next prime is 831747451. The reversal of 831747425 is 524747138.

831747425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 34023889 + 797723536 = 5833^2 + 28244^2 .

It is not a de Polignac number, because 831747425 - 2¹² = 831743329 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2356049 + ... + 2356401.

It is an arithmetic number, because the mean of its divisors is an integer number (57648251).

Almost surely, 2^831747425 is an apocalyptic number.

It is an amenable number.

831747425 is a deficient number, since it is larger than the sum of its proper divisors (205921093).

831747425 is an equidigital number, since it uses as much as digits as its factorization.

831747425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977 (or 665 counting only the distinct ones).

The product of its digits is 188160, while the sum is 41.

The square root of 831747425 is about 28840.0316400659. The cubic root of 831747425 is about 940.4386910393.

The spelling of 831747425 in words is "eight hundred thirty-one million, seven hundred forty-seven thousand, four hundred twenty-five".