812785125 has 64 divisors (see below), whose sum is σ = 1408942080. Its totient is φ = 415656000.

The previous prime is 812785111. The next prime is 812785151. The reversal of 812785125 is 521587218.

812785125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 812785125 - 2⁷ = 812784997 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1615624 + ... + 1616126.

It is an arithmetic number, because the mean of its divisors is an integer number (22014720).

Almost surely, 2^812785125 is an apocalyptic number.

It is an amenable number.

812785125 is a deficient number, since it is larger than the sum of its proper divisors (596156955).

812785125 is a wasteful number, since it uses less digits than its factorization.

812785125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691 (or 681 counting only the distinct ones).

The product of its digits is 44800, while the sum is 39.

The square root of 812785125 is about 28509.3866121318. The cubic root of 812785125 is about 933.2369284638.

The spelling of 812785125 in words is "eight hundred twelve million, seven hundred eighty-five thousand, one hundred twenty-five".