825534747 has 20 divisors (see below), whose sum is σ = 1234011240. Its totient is φ = 549997344.

The previous prime is 825534709. The next prime is 825534767. The reversal of 825534747 is 747435528.

It is not a de Polignac number, because 825534747 - 2¹⁴ = 825518363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (825534707) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 191704 + ... + 195962.

It is an arithmetic number, because the mean of its divisors is an integer number (61700562).

Almost surely, 2^825534747 is an apocalyptic number.

825534747 is a deficient number, since it is larger than the sum of its proper divisors (408476493).

825534747 is a wasteful number, since it uses less digits than its factorization.

825534747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6664 (or 6655 counting only the distinct ones).

The product of its digits is 940800, while the sum is 45.

The square root of 825534747 is about 28732.1204751755. The cubic root of 825534747 is about 938.0913235871.

It can be divided in two parts, 825534 and 747, that added together give a square (826281 = 909²).

The spelling of 825534747 in words is "eight hundred twenty-five million, five hundred thirty-four thousand, seven hundred forty-seven".