825699213 has 12 divisors (see below), whose sum is σ = 1193940540. Its totient is φ = 549882816.

The previous prime is 825699209. The next prime is 825699221. The reversal of 825699213 is 312996528.

825699213 is a `hidden beast` number, since 82 + 569 + 9 + 2 + 1 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 651934089 + 173765124 = 25533^2 + 13182^2 .

It is not a de Polignac number, because 825699213 - 2² = 825699209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825699293) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39558 + ... + 56711.

It is an arithmetic number, because the mean of its divisors is an integer number (99495045).

Almost surely, 2^825699213 is an apocalyptic number.

It is an amenable number.

825699213 is a deficient number, since it is larger than the sum of its proper divisors (368241327).

825699213 is a wasteful number, since it uses less digits than its factorization.

825699213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97228 (or 97225 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 825699213 is about 28734.9823908072. The cubic root of 825699213 is about 938.1536160925.

The spelling of 825699213 in words is "eight hundred twenty-five million, six hundred ninety-nine thousand, two hundred thirteen".