812867325 has 24 divisors (see below), whose sum is σ = 1422998208. Its totient is φ = 408026880.

The previous prime is 812867309. The next prime is 812867351. The reversal of 812867325 is 523768218.

It is not a de Polignac number, because 812867325 - 2⁴ = 812867309 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 317497 + ... + 320046.

It is an arithmetic number, because the mean of its divisors is an integer number (59291592).

Almost surely, 2^812867325 is an apocalyptic number.

812867325 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

812867325 is a deficient number, since it is larger than the sum of its proper divisors (610130883).

812867325 is a wasteful number, since it uses less digits than its factorization.

812867325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637573 (or 637568 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 812867325 is about 28510.8282061395. The cubic root of 812867325 is about 933.2683879838.

The spelling of 812867325 in words is "eight hundred twelve million, eight hundred sixty-seven thousand, three hundred twenty-five".