812525383 has 4 divisors (see below), whose sum is σ = 812672608. Its totient is φ = 812378160.

The previous prime is 812525359. The next prime is 812525401. The reversal of 812525383 is 383525218.

812525383 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 383525218 = 2 ⋅191762609.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-812525383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812525303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64998 + ... + 76483.

It is an arithmetic number, because the mean of its divisors is an integer number (203168152).

Almost surely, 2^812525383 is an apocalyptic number.

812525383 is a deficient number, since it is larger than the sum of its proper divisors (147225).

812525383 is a wasteful number, since it uses less digits than its factorization.

812525383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147224.

The product of its digits is 57600, while the sum is 37.

The square root of 812525383 is about 28504.8308712751. The cubic root of 812525383 is about 933.1375062652.

The spelling of 812525383 in words is "eight hundred twelve million, five hundred twenty-five thousand, three hundred eighty-three".