817012825 has 24 divisors (see below), whose sum is σ = 1084528800. Its totient is φ = 608693760.

The previous prime is 817012817. The next prime is 817012841. The reversal of 817012825 is 528210718.

It is not a de Polignac number, because 817012825 - 2³ = 817012817 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13449 + ... + 42601.

It is an arithmetic number, because the mean of its divisors is an integer number (45188700).

Almost surely, 2^817012825 is an apocalyptic number.

It is an amenable number.

817012825 is a deficient number, since it is larger than the sum of its proper divisors (267515975).

817012825 is a wasteful number, since it uses less digits than its factorization.

817012825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29241 (or 29236 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 34.

The square root of 817012825 is about 28583.4362000093. The cubic root of 817012825 is about 934.8522076639.

The spelling of 817012825 in words is "eight hundred seventeen million, twelve thousand, eight hundred twenty-five".