825496551 has 24 divisors (see below), whose sum is σ = 1342748160. Its totient is φ = 484160400.

The previous prime is 825496549. The next prime is 825496559. The reversal of 825496551 is 155694528.

825496551 is a `hidden beast` number, since 8 + 2 + 5 + 4 + 96 + 551 = 666.

825496551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 825496551 - 2¹ = 825496549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 825496497 and 825496506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825496559) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 131421 + ... + 137558.

It is an arithmetic number, because the mean of its divisors is an integer number (55947840).

Almost surely, 2^825496551 is an apocalyptic number.

825496551 is a deficient number, since it is larger than the sum of its proper divisors (517251609).

825496551 is a wasteful number, since it uses less digits than its factorization.

825496551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269027 (or 269024 counting only the distinct ones).

The product of its digits is 432000, while the sum is 45.

The square root of 825496551 is about 28731.4557758565. The cubic root of 825496551 is about 938.0768554342.

The spelling of 825496551 in words is "eight hundred twenty-five million, four hundred ninety-six thousand, five hundred fifty-one".