879791225 has 24 divisors (see below), whose sum is σ = 1161597528. Its totient is φ = 658713600.

The previous prime is 879791203. The next prime is 879791251. The reversal of 879791225 is 522197978.

It can be written as a sum of positive squares in 12 ways, for example, as 480311056 + 399480169 = 21916^2 + 19987^2 .

It is a de Polignac number, because none of the positive numbers 2^k-879791225 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71207 + ... + 82643.

It is an arithmetic number, because the mean of its divisors is an integer number (48399897).

Almost surely, 2^879791225 is an apocalyptic number.

879791225 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

879791225 is a deficient number, since it is larger than the sum of its proper divisors (281806303).

879791225 is a wasteful number, since it uses less digits than its factorization.

879791225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11645 (or 11640 counting only the distinct ones).

The product of its digits is 635040, while the sum is 50.

The square root of 879791225 is about 29661.2748377409. The cubic root of 879791225 is about 958.2081829430.

The spelling of 879791225 in words is "eight hundred seventy-nine million, seven hundred ninety-one thousand, two hundred twenty-five".