810345513325 has 6 divisors (see below), whose sum is σ = 1004828436554. Its totient is φ = 648276410640.

The previous prime is 810345513301. The next prime is 810345513337. The reversal of 810345513325 is 523315543018.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 87481667529 + 722863845796 = 295773^2 + 850214^2 .

It is not a de Polignac number, because 810345513325 - 2⁹ = 810345512813 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, 16206910242 + ... + 16206910291.

Almost surely, 2^810345513325 is an apocalyptic number.

It is an amenable number.

810345513325 is a deficient number, since it is larger than the sum of its proper divisors (194482923229).

810345513325 is a wasteful number, since it uses less digits than its factorization.

810345513325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32413820543 (or 32413820538 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 40.

The spelling of 810345513325 in words is "eight hundred ten billion, three hundred forty-five million, five hundred thirteen thousand, three hundred twenty-five".