825616545 has 48 divisors (see below), whose sum is σ = 1452065472. Its totient is φ = 400308480.

The previous prime is 825616541. The next prime is 825616607. The reversal of 825616545 is 545616528.

It is not a de Polignac number, because 825616545 - 2² = 825616541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 825616497 and 825616506.

It is not an unprimeable number, because it can be changed into a prime (825616541) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 167415 + ... + 172275.

It is an arithmetic number, because the mean of its divisors is an integer number (30251364).

Almost surely, 2^825616545 is an apocalyptic number.

It is an amenable number.

825616545 is a deficient number, since it is larger than the sum of its proper divisors (626448927).

825616545 is a wasteful number, since it uses less digits than its factorization.

825616545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4962 (or 4949 counting only the distinct ones).

The product of its digits is 288000, while the sum is 42.

The square root of 825616545 is about 28733.5438990738. The cubic root of 825616545 is about 938.1223061149.

The spelling of 825616545 in words is "eight hundred twenty-five million, six hundred sixteen thousand, five hundred forty-five".