825016215 has 32 divisors (see below), whose sum is σ = 1370416320. Its totient is φ = 423320576.

The previous prime is 825016207. The next prime is 825016217. The reversal of 825016215 is 512610528.

It is a cyclic number.

It is not a de Polignac number, because 825016215 - 2³ = 825016207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825016217) 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, 124219 + ... + 130691.

It is an arithmetic number, because the mean of its divisors is an integer number (42825510).

Almost surely, 2^825016215 is an apocalyptic number.

825016215 is a deficient number, since it is larger than the sum of its proper divisors (545400105).

825016215 is a wasteful number, since it uses less digits than its factorization.

825016215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6803.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 825016215 is about 28723.0954982223. The cubic root of 825016215 is about 937.8948722354.

The spelling of 825016215 in words is "eight hundred twenty-five million, sixteen thousand, two hundred fifteen".