825611812 has 6 divisors (see below), whose sum is σ = 1444820678. Its totient is φ = 412805904.

The previous prime is 825611791. The next prime is 825611819. The reversal of 825611812 is 218116528.

It can be written as a sum of positive squares in only one way, i.e., 586414656 + 239197156 = 24216^2 + 15466^2 .

It is a super-2 number, since 2×825611812² = 1363269728227846688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (825611819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103201473 + ... + 103201480.

Almost surely, 2^825611812 is an apocalyptic number.

It is an amenable number.

825611812 is a deficient number, since it is larger than the sum of its proper divisors (619208866).

825611812 is a wasteful number, since it uses less digits than its factorization.

825611812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206402957 (or 206402955 counting only the distinct ones).

The product of its digits is 7680, while the sum is 34.

The square root of 825611812 is about 28733.4615387704. The cubic root of 825611812 is about 938.1205134581.

The spelling of 825611812 in words is "eight hundred twenty-five million, six hundred eleven thousand, eight hundred twelve".