825008173 has 4 divisors (see below), whose sum is σ = 900008928. Its totient is φ = 750007420.

The previous prime is 825008167. The next prime is 825008179. The reversal of 825008173 is 371800528.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (825008167) and next prime (825008179).

It is a cyclic number.

It is not a de Polignac number, because 825008173 - 2²¹ = 822911021 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 (825008179) 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, 37500361 + ... + 37500382.

It is an arithmetic number, because the mean of its divisors is an integer number (225002232).

Almost surely, 2^825008173 is an apocalyptic number.

It is an amenable number.

825008173 is a deficient number, since it is larger than the sum of its proper divisors (75000755).

825008173 is a wasteful number, since it uses less digits than its factorization.

825008173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75000754.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 825008173 is about 28722.9555060060. The cubic root of 825008173 is about 937.8918247902.

The spelling of 825008173 in words is "eight hundred twenty-five million, eight thousand, one hundred seventy-three".