812065525 has 6 divisors (see below), whose sum is σ = 1006961282. Its totient is φ = 649652400.

The previous prime is 812065519. The next prime is 812065547. The reversal of 812065525 is 525560218.

812065525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 4028049 + 808037476 = 2007^2 + 28426^2 .

It is a de Polignac number, because none of the positive numbers 2^k-812065525 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16241286 + ... + 16241335.

Almost surely, 2^812065525 is an apocalyptic number.

It is an amenable number.

812065525 is a deficient number, since it is larger than the sum of its proper divisors (194895757).

812065525 is a wasteful number, since it uses less digits than its factorization.

812065525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32482631 (or 32482626 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 34.

The square root of 812065525 is about 28496.7634127106. The cubic root of 812065525 is about 932.9614331090.

The spelling of 812065525 in words is "eight hundred twelve million, sixty-five thousand, five hundred twenty-five".