825789945 has 16 divisors (see below), whose sum is σ = 1322858880. Its totient is φ = 439889664.

The previous prime is 825789929. The next prime is 825789959. The reversal of 825789945 is 549987528.

It is a happy number.

It is not a de Polignac number, because 825789945 - 2⁴ = 825789929 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20224 + ... + 45393.

It is an arithmetic number, because the mean of its divisors is an integer number (82678680).

Almost surely, 2^825789945 is an apocalyptic number.

It is an amenable number.

825789945 is a deficient number, since it is larger than the sum of its proper divisors (497068935).

825789945 is a wasteful number, since it uses less digits than its factorization.

825789945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66464.

The product of its digits is 7257600, while the sum is 57.

The square root of 825789945 is about 28736.5611199392. The cubic root of 825789945 is about 938.1879778532.

The spelling of 825789945 in words is "eight hundred twenty-five million, seven hundred eighty-nine thousand, nine hundred forty-five".