825215 has 8 divisors (see below), whose sum is σ = 997728. Its totient is φ = 655200.

The previous prime is 825203. The next prime is 825229. The reversal of 825215 is 512528.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 825215 - 2⁴ = 825199 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 7 ways as a sum of consecutive naturals, for example, 209 + ... + 1301.

It is an arithmetic number, because the mean of its divisors is an integer number (124716).

2⁸²⁵²¹⁵ is an apocalyptic number.

825215 is a deficient number, since it is larger than the sum of its proper divisors (172513).

825215 is a wasteful number, since it uses less digits than its factorization.

825215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249.

The product of its digits is 800, while the sum is 23.

The square root of 825215 is about 908.4134521241. The cubic root of 825215 is about 93.7970193769.

The spelling of 825215 in words is "eight hundred twenty-five thousand, two hundred fifteen".