825416879 has 16 divisors (see below), whose sum is σ = 999673920. Its totient is φ = 666435840.

The previous prime is 825416873. The next prime is 825416897. The reversal of 825416879 is 978614528.

It is a de Polignac number, because none of the positive numbers 2^k-825416879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825416873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41264 + ... + 57909.

It is an arithmetic number, because the mean of its divisors is an integer number (62479620).

Almost surely, 2^825416879 is an apocalyptic number.

825416879 is a deficient number, since it is larger than the sum of its proper divisors (174257041).

825416879 is a wasteful number, since it uses less digits than its factorization.

825416879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99250.

The product of its digits is 967680, while the sum is 50.

The square root of 825416879 is about 28730.0692480892. The cubic root of 825416879 is about 938.0466752702.

The spelling of 825416879 in words is "eight hundred twenty-five million, four hundred sixteen thousand, eight hundred seventy-nine".