825473811 has 32 divisors (see below), whose sum is σ = 1200502080. Its totient is φ = 502419456.

The previous prime is 825473801. The next prime is 825473821. The reversal of 825473811 is 118374528.

It is an interprime number because it is at equal distance from previous prime (825473801) and next prime (825473821).

It is not a de Polignac number, because 825473811 - 2²⁵ = 791919379 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 825473811.

It is not an unprimeable number, because it can be changed into a prime (825473801) 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, 1163925 + ... + 1164633.

It is an arithmetic number, because the mean of its divisors is an integer number (37515690).

Almost surely, 2^825473811 is an apocalyptic number.

825473811 is a deficient number, since it is larger than the sum of its proper divisors (375028269).

825473811 is a wasteful number, since it uses less digits than its factorization.

825473811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383.

The product of its digits is 53760, while the sum is 39.

The square root of 825473811 is about 28731.0600396157. The cubic root of 825473811 is about 938.0682416031.

The spelling of 825473811 in words is "eight hundred twenty-five million, four hundred seventy-three thousand, eight hundred eleven".