817325745 has 32 divisors (see below), whose sum is σ = 1422085248. Its totient is φ = 399172608.

The previous prime is 817325741. The next prime is 817325767. The reversal of 817325745 is 547523718.

It is not a de Polignac number, because 817325745 - 2² = 817325741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 817325697 and 817325706.

It is not an unprimeable number, because it can be changed into a prime (817325741) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33879 + ... + 52748.

It is an arithmetic number, because the mean of its divisors is an integer number (44440164).

Almost surely, 2^817325745 is an apocalyptic number.

817325745 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

817325745 is a deficient number, since it is larger than the sum of its proper divisors (604759503).

817325745 is a wasteful number, since it uses less digits than its factorization.

817325745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86689.

The product of its digits is 235200, while the sum is 42.

The square root of 817325745 is about 28588.9094755291. The cubic root of 817325745 is about 934.9715434541.

The spelling of 817325745 in words is "eight hundred seventeen million, three hundred twenty-five thousand, seven hundred forty-five".