830621825 has 12 divisors (see below), whose sum is σ = 1123605168. Its totient is φ = 604088400.

The previous prime is 830621791. The next prime is 830621837. The reversal of 830621825 is 528126038.

It is not a de Polignac number, because 830621825 - 2⁸ = 830621569 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1509947 + ... + 1510496.

It is an arithmetic number, because the mean of its divisors is an integer number (93633764).

Almost surely, 2^830621825 is an apocalyptic number.

It is an amenable number.

830621825 is a deficient number, since it is larger than the sum of its proper divisors (292983343).

830621825 is a wasteful number, since it uses less digits than its factorization.

830621825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3020464 (or 3020459 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 830621825 is about 28820.5104916620. The cubic root of 830621825 is about 940.0142690606.

The spelling of 830621825 in words is "eight hundred thirty million, six hundred twenty-one thousand, eight hundred twenty-five".