825492825 has 18 divisors (see below), whose sum is σ = 1478549774. Its totient is φ = 440262720.

The previous prime is 825492821. The next prime is 825492853. The reversal of 825492825 is 528294528.

825492825 is a `hidden beast` number, since 82 + 5 + 492 + 82 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 27373824 + 798119001 = 5232^2 + 28251^2 .

It is not a de Polignac number, because 825492825 - 2² = 825492821 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (825492821) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1834204 + ... + 1834653.

Almost surely, 2^825492825 is an apocalyptic number.

It is an amenable number.

825492825 is a deficient number, since it is larger than the sum of its proper divisors (653056949).

825492825 is a wasteful number, since it uses less digits than its factorization.

825492825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3668873 (or 3668865 counting only the distinct ones).

The product of its digits is 460800, while the sum is 45.

The square root of 825492825 is about 28731.3909339593. The cubic root of 825492825 is about 938.0754440495.

The spelling of 825492825 in words is "eight hundred twenty-five million, four hundred ninety-two thousand, eight hundred twenty-five".