834921025 has 9 divisors (see below), whose sum is σ = 1035481251. Its totient is φ = 667821240.

The previous prime is 834921023. The next prime is 834921029. The reversal of 834921025 is 520129438.

The square root of 834921025 is 28895.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 300571569 + 534349456 = 17337^2 + 23116^2 .

It is not a de Polignac number, because 834921025 - 2¹ = 834921023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (834921023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 141586 + ... + 147364.

Almost surely, 2^834921025 is an apocalyptic number.

834921025 is the 28895-th square number.

834921025 is the 14448-th centered octagonal number.

It is an amenable number.

834921025 is a deficient number, since it is larger than the sum of its proper divisors (200560226).

834921025 is an frugal number, since it uses more digits than its factorization.

834921025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11568 (or 5784 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The cubic root of 834921025 is about 941.6332797658.

The spelling of 834921025 in words is "eight hundred thirty-four million, nine hundred twenty-one thousand, twenty-five".