816125006 has 4 divisors (see below), whose sum is σ = 1224187512. Its totient is φ = 408062502.

The previous prime is 816124963. The next prime is 816125041. The reversal of 816125006 is 600521618.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 816125006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204031250 + ... + 204031253.

It is an arithmetic number, because the mean of its divisors is an integer number (306046878).

Almost surely, 2^816125006 is an apocalyptic number.

816125006 is a deficient number, since it is larger than the sum of its proper divisors (408062506).

816125006 is a wasteful number, since it uses less digits than its factorization.

816125006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408062505.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 816125006 is about 28567.9016730316. The cubic root of 816125006 is about 934.5134613003.

The spelling of 816125006 in words is "eight hundred sixteen million, one hundred twenty-five thousand, six".